As filed with the Securities and Exchange Commission on November 17 , 2015

Registration No. 333-196492

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Post-Effective Amendment Number 1

to

FORM S-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

International Western Petroleum, Inc.

(Exact Name of Registrant in its Charter)

5525 N. MacArthur Boulevard, Suite 280

Irving, TX 75038

(855) 809-6900

(Address and Telephone Number of Registrant’s Principal

Executive Offices and Principal Place of Business)

Copies of communications to:

Gregg E. Jaclin, Esq.

Szaferman, Lakind, Blumstein & Blader, PC

101 Grovers Mill Road, Suite 200

Lawrenceville, NJ 08648

Phone: 609-275-0400

Fax: 609-275-4511

Approximate date of commencement of proposed sale to the public: As soon as practicable after this Registration Statement becomes effective. If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box. [X]

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act of 1933, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [  ]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act of 1933, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [  ]

If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [  ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

EXPLANATORY NOTE

On June 3, 2014, International Western Petroleum, Inc. (the “Company”) filed a Registration Statement on Form S-1 (No. 333-196492) (the “Registration Statement”) with the Securities and Exchange Commission (the “SEC”) that was subsequently declared effective on December 24, 2014. The Registration Statement registered the resale of up to 4,589,964 shares of the Company’s common stock, $0.001 par value per share (the “Common Stock”), by the selling security holders identified in the prospectus contained therein.

This Post-Effective Amendment No. 1 to Form S-1 (the “Post-Effective Amendment”) is being filed by the Company to deregister a total of 15,033 unsold shares of Common Stock held by five (5) selling security holders listed in the Registration Statement (David Phu – 200 shares; Peggy Chen – 1,000 shares, Gurudas Somadder – 13,333 shares, Edward Morgan – 250 shares; and Stephanie Mach – 250 shares). These shares were cancelled as of August 27, 2015 and are thus no longer available to be registered. As a result of this deregistration, 4,574,931 shares remain registered for sale pursuant to the Registration Statement.

On August 4, 2015, David Phu again bought 200 shares; on August 6, 2015 Peggy Chen again bought 1,000 shares, on August 13, 2015 Gurudas Somadder again bought 13,333 shares; on August 12, 2015 Edward Morgan again bought 250 shares; and on August 12, 2015 Stephanie Mach again bought 250 shares. These investors allowed the Company to not refund their money for the cancelled shares and to use money previously paid for the purpose of the purchase of the new shares. These 15,033 new shares will not be registered as part of the Registration Statement, this post-effective amendment, or any future post-effective amendment.

This Post-Effective Amendment is also being filed to include the information contained in the Company’s Annual Report on Form 10-K for the fiscal year ended February 28, 2015, as filed with the SEC on May 29, 2015, to include the Company’s Quarterly Report on Form 10-Q for the three-months ended August 31, 2015, as filed with the SEC on October 21, 2015, to include the Company’s Quarterly Report on Form 10-Q for the three-months ended May 31, 2015, as filed with the SEC on July 21, 2015, to include the Company’s Current Report filed on Form 8-K with the SEC on May 20, 2015, and to make certain other updates as contained herein.

All applicable registration fees were paid at the time of the original filing of the Registration Statement.

The information in this prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission becomes effective. This prospectus is not an offer to sell these securities and we are not soliciting offers to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION

November 17 , 2015

PRELIMINARY PROSPECTUS

INTERNATIONAL WESTERN PETROLEUM, INC.

4,574,931 SHARES OF COMMON STOCK

The selling security holders named in this prospectus are offering all of the shares of Common Stock offered through this prospectus. The Common Stock to be sold by the selling security holders as provided in the “Selling Security Holders” section are shares of our common stock, par value $0.001 per share (the “Common Stock”), that have already been issued and are currently outstanding. We will not receive any proceeds from the sale of the Common Stock covered by this prospectus.

Our Common Stock is presently not traded on any market or securities exchange. The selling security holders have not engaged any underwriter in connection with the sale of their shares of Common Stock. Common Stock being registered in this Registration Statement may be sold by selling security holders at a fixed price of $0.75 per share until our Common Stock is quoted in the OTCQX or OTCQB marketplace of OTC Link and thereafter at prevailing market prices or privately negotiated prices or in transactions that are not in the public market. There can be no assurance that a market maker will agree to file the necessary documents with the Financial Industry Regulatory Authority (“FINRA”), which regulates the OTCQX and OTCQB marketplaces of OTC Link, nor can there be any assurance that such an application for quotation will be approved. We have agreed to bear the expenses relating to the registration of the shares of the selling security holders.

We are an emerging growth company as that term is used in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”) and are subject to reduced public company reporting requirements.

Investing in our Common Stock involves a high degree of risk. See “Risk Factors” beginning on page 5 to read about factors you should consider before buying shares of our Common Stock.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

The Date of This Prospectus is: November 17 , 2015

TABLE OF CONTENTS

Please read this prospectus carefully. It describes our business, our financial condition and results of operations. We have prepared this prospectus so that you will have the information necessary to make an informed investment decision.

You should rely only on information contained in this prospectus. We have not authorized any other person to provide you with different information. This prospectus is not an offer to sell, nor is it seeking an offer to buy, these securities in any state where the offer or sale is not permitted. The information in this prospectus is complete and accurate as of the date on the front cover, but the information may have changed since that date.

PROSPECTUS SUMMARY

This summary highlights selected information contained elsewhere in this prospectus. This summary does not contain all the information that you should consider before investing in the Common Stock. You should carefully read the entire prospectus, including “Risk Factors,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the Financial Statements, before making an investment decision. In this Prospectus, the terms “International Western Petroleum,” “Company,” “we,” “us” and “our” refer to International Western Petroleum, Inc.

Overview

We were incorporated on February 19, 2014 under the laws of the state of Nevada. We are an exploration-stage oil and natural gas company that focuses on the acquisition, development, and exploration of crude oil and natural gas properties in Texas. As described below under “Operational Plans”, on May 4, 2015, the Company acquired working interests from the Bend Arch Lion 1A Joint Venture and the Bend Arch Lion 1B Joint Venture. The Company, together with its operator, International Western Oil Corporation (“IWO”), plans to drill additional oil and gas wells in 2015. The parent and 100% owner of IWO is International Western Petroleum Corporation (“IWPO”).

IWO is a wholly-owned subsidiary of and separate entity from IWPO. The Company’s management is Mr. Ross Ramsey and Dr. Benjamin Tran (collectively, “Management”) . Management serves in similar positions with IWPO and IWO. IWO is licensed by the Railroad Commission of Texas as an operator and has been feeding data and has been serving as a consultant related to exploration and acquisitions to us with regard to the Bend Arch Lion, Bend Arch Henry, and Bend Arch North Anderson projects discussed below. Although they are separate entities, IWPO does not engage in any business activities beyond serving as IWO’s parent. IWO is IWPO’s operating company. There are no formal agreements among the Company and IWO. IWO serves as a Texas-licensed oil and gas operator and on-site consultant for the Company to provide the Company with full geology reports, on-site survey work, reserve analysis and additional geology consulting work on an as-needed basis.

The Company’s objective is to tap into the high potential leases of the Central/West Texas region of the United States, aiming to unlock its potential, specifically in the prolific Bend Arch area. This area is approximately 120 miles long and 40 miles wide running from Archer County, Texas in the north to Brown County, Texas in the south. This area has been one of the most active drilling areas during the recent resurgence of United States drilling activities. To achieve the Company’s objectives, state-of the-art technology will be key since oil and natural gas reserve development is a highly technologically oriented industry. In general, the Company expects to apply geo-radiometry exploration technology to determine the drilling locations and the drilling depths.

After choosing a new prospect, additional research and evaluation was carried out using personal contacts, geologists, seismic, satellite hydrocarbon imaging, and every available resource to glean information and data in order to choose the prime drilling locations. The information provided by the geologist who interpreted the seismic data on the prospect indicates the application of a 3-D computer model to interpret 2-D seismic data. According to reliable sources in the geophysical field, in the absence of actual 3-D seismic data, using 2-D seismic data in a 3-D seismic computer program is a common practice. Management believes using 2-D seismic data in a 3-D seismic computer program gives the geophysicist or geologist an efficient way of looking at and interpreting large amounts of data. Through the interpretation of the seismic data, several “bright spots” have been identified and are the primary targets of this prospect. According to “The Value of 3D Seismic in Today’s Exploration Environment — in Canada and Around the World” by N.M. Cooper (available at http://www.mustagh.com/abstract/OPI_3D.html), utilizing traditional 2-D seismic data has yielded a 60% success rate. Utilizing 2-D seismic data in a 3-D seismic computer program yields an 80% success rate. In this context, success rate means the ability to make an oil/gas well that can produce a commercialized quantity of hydrocarbon.

Strategy and Implementation Summary

Sales Strategy

Abilene, Texas is the closest city with oil handling and sales firms. Our sales strategy in relation to spot pricing will be to produce less when the sales price is lower and produce more when the sales price is higher. To maintain the lowest production cost, we will aim to have our inventory in tanks be virtually zero. Members of the Ramsey family that are related to our CEO have business relationships with BML and West Texas Gas (WTG Jameson). The Company has started producing oil and natural gas, while leveraging Tier 1 business relationship s and having entered into material agreements with BML so that, as our Tier 1 buyers, BML can handle pick-up and sales of our crude oil stock to refineries and WTG Jameson can collect natural gas from our gas lines connecting to WTG pipelines.

As such, crude oil will be picked up from the leases and natural gas can be collected as needed during the calendar month. At the end of the month the hydrocarbon total sales will be tallied by lease and the 30-day average of the daily closing of oil and gas will be tabulated. On or about the 25th of the following month the proceeds checks from oil and gas sales will be issued to the financial parties of record.

Operational Plans

As of May 4, 2015, the Company completed the acquisitions of the 4-well Bend Arch Lion 1A Joint Venture and the 6-well Bend Arch Lion 1B Joint Venture. In late August 2015, the Company completed two additional drilling projects (4B well and 5B well) from the Bend Arch Lion 1B Joint Venture. The 4B well and the 5B well had initial production (IPs) of 42 Barrels of Oil per Day (“BOPD”) and 59 BOPD, respectively. In late September 2015, the Company also successfully drilled the last well (6B) of the 6-well Bend Arch Lion 1B Joint Venture, with final completion expected by the end of calendar year 2015. In the last two calendar months of 2015, the Company plans to continue to raise more capital via equity financing options to expand its operational goal in 2016. Also in the last two calendar months of 2015, the Company plans to re-perforate all of the existing 4 wells of the Bend Arch Lion 1A using the new proprietary fracking method that the Company discovered in April 2015 in an effort to increase production. The leasehold of this property is currently owned by IWO. At the moment, the Bend Arch Lion 1B Joint Venture has sufficient budget for completing the 6B well as planned.

We have a plan to set up additional drilling joint ventures from the Bend Arch Lion Project leasehold from IWO once we have enough capital to do so.

The Company has plans to design a cost effective operations budget for each exploration project and each budget will vary depending on the total depth of drilling and whether it is a new drilling or a re-entry. For each project, the Company plans to hire selected operators to work under the close supervision of a core team of Company geologists, engineers and scientists.

The exploration process is a 2-phase process: 1) Drilling and Testing and 2) Well Completion. The Company plans to hire drilling specialists and technical consultants designated to oversee the drilling for each well during the Drilling and Testing phase. For the Well Completion process, the Company will hire technical data collectors and cementing operators to ensure the best performance upon perforating the wells at different pay zones based on thorough technical advisory work done by our internal and external geologists before production.

At the moment, the Company has prospected several projects:

The Bend Arch Henry Project is a small project located at the border of Taylor and Jones County, Northwest of Abilene, Texas. This would be a shallow drilling program (approximately 3,000 feet) which would be designed to drill and produce oil mainly from the “Cook Sand” pay zone and “Hope Lime” pay zone that lie above the “Caddo-Ellenberger” zone. Management has access to the geology survey report as well as mud log and open hole log of some existing wells nearby; and, per this data, the wells found oil. In general, wells in the vicinity of our Henry project have already produced, Management believes, an average of 220,000 barrels of oil per well. There are multiple wells in this area that have been producing, Management believes, for over 66 years.

The Bend Arch North Anderson Project is focused on the “Flippen Lime” pay zone at an approximate depth of 2,450 feet. The prospect acreage is located west of and adjacent to the Anson North and Anson town site fields, which is located immediately North of the City of Anson, Jones County. The fields produced from the Flippen Lime and Cook Sand. The Flippen produced a cumulative total of 140,586 barrels and the Cook Sand approximately 134,919 barrels. The Flippen lime potentials varied from 10 BOPD up to as much as 135 BOPD. In view of the data to which Management has access, the North Anson Prospect, Management believes, offers excellent possibilities for substantial production from the Flippen formation.

The Bend Arch Lion Project encompassing 777-acre leasehold in Coleman County is a multi-well exploration program out of which the Company has acquired 2 joint ventures from IWO as mentioned above. This project currently has 9 new producing wells with, Management believes, high quality proven reserves in several pay zones highlighted by the “Gray Sand” pay zone and in some instances the “Ellenberger” pay zone.

The Company shall conduct further review historical geo-radiometric technology to a more complete and reliable level to interpret and compile the Bend Arch Lion Project data. Management believes there are the necessary inclusionary and sedimentary formations for hydrocarbon generation and deposits and geology studies have concluded that there are significant hydrocarbon reserves (approximately 5.3 Million barrels of oil) present in this lease. Geology studies to which Management has access have also identified potential drilling areas for Company geologists to further study before deciding on the exact drilling locations.

Below is selected financial data is as of August 31, 2015 and February 28, 2015:

INTERNATIONAL WESTERN PETROLEUM, INC.

BALANCE SHEETS

(Unaudited)

Where You Can Find Us

The Company’s principal executive office and mailing address is 5525 N. MacArthur Boulevard, Suite 280, Irving, TX 75038. Our telephone number is 855-809-6900.

The Offering

RISK FACTORS

Any investment in our common stock involves a high degree of risk. Investors should carefully consider all of the information contained in or incorporated by reference in this prospectus, including the risks and uncertainties discussed in our Annual Report on Form 10-K for the year ended February 28, 2015, incorporated by reference herein, and as updated in our subsequent periodic reports filed with the Securities and Exchange Commission, before deciding whether to purchase our common stock. Our business, financial condition or results of operations could be materially adversely affected by these risks if any of them actually occur. This prospectus also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including the risks we face as described below and elsewhere in this prospectus.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain information contained in this Registration Statement includes forward-looking statements. The statements herein which are not historical reflect our current expectations and projections about the Company’s future results, performance, liquidity, financial condition, prospects and opportunities and are based upon information currently available to the Company and its management and management’s interpretation of what is believed to be significant factors affecting the business, including many assumptions regarding future events. Such forward-looking statements include statements regarding, among other things, (i) our projected sales and profitability; (ii) our growth strategies; (iii) anticipated trends in our industry; (iv) our future financing plans; and (v) our anticipated needs for working capital. Forward-looking statements, which involve assumptions and describe our future plans, strategies, and expectations, are generally identifiable by use of the words “will,” “shall,” “may,” “should,” “expect,” “anticipate,” “estimate,” “believe,” “intend,” “plan,” or “project” or the negative of these words or other variations on these words or comparable terminology. Actual results, performance, liquidity, financial condition, prospects and opportunities could differ materially from those expressed in, or implied by, these forward-looking statements as a result of various risks, uncertainties and other factors, including the ability to raise sufficient capital to continue the Company’s operations. Actual events or results may differ materially from those discussed in forward-looking statements as a result of various factors, including, without limitation, the risks outlined under “Risk Factors” and matters described in this Registration Statement generally. In light of these risks and uncertainties, there can be no assurance that the forward-looking statements contained in this Registration Statement will in fact occur.

Prospective investors should not place undue reliance on any forward-looking statements. Except as expressly required by the federal securities laws, there is no undertaking to publicly update or revise any forward-looking statements, whether as a result of new information, future events, changed circumstances or any other reason.

The specific discussions herein about the Company include financial projections and future estimates and expectations about the Company’s business. The projections, estimates and expectations are presented in this Registration Statement only as a guide about future possibilities and do not represent actual amounts or assured events. All the projections and estimates are based exclusively on the Company management’s own assessment of its business, the industry in which it works and the economy at large and other operational factors, including capital resources and liquidity, financial condition, fulfillment of contracts and opportunities. The actual results may differ significantly from the projections.

Prospective investors should not make an investment decision based solely on the Company’s projections, estimates or expectations.

USE OF PROCEEDS

We will not receive any proceeds from the sale of Common Stock by the selling security holders. All of the net proceeds from the sale of our Common Stock will go to the selling security holders as described below in the sections entitled “Selling Security Holders” and “Plan of Distribution”. We have agreed to bear the expenses relating to the registration of the Common Stock for the selling security holders.

SELLING SECURITY-HOLDERS

The shares of Common Stock being offered for resale by the selling security holders consist of 4,574,931 shares of our Common Stock held by no more than 35 unaccredited shareholders. Such shareholders, as indicated by an * in the following table, include the holders of 202,331 shares sold in our private offering pursuant to Regulation D Rule 506 sold through May 6, 2014 at an offering price of $0.75 per share (the “Private Offering”).

The following table sets forth the names of the selling security holders, the number of shares of Common Stock beneficially owned by each of the selling stockholders as of November 17, 2015 and the number of shares of Common Stock being offered by the selling stockholders. The shares being offered hereby are being registered to permit public secondary trading, and the selling stockholders may offer all or part of the shares for resale from time to time. However, the selling stockholders are under no obligation to sell all or any portion of such shares nor are the selling stockholders obligated to sell any shares immediately upon effectiveness of this prospectus. All information with respect to share ownership has been furnished by the selling stockholders.

The above selling security holder’s table has been updated to deregister a total of 15,033 unsold shares of the Common Stock held by five (5) selling security holders listed in the selling security holder’s table contained in the Registration Statement filed with the SEC on June 3, 2014 (David Phu – 200 shares; Peggy Chen – 1,000 shares, Gurudas Somadder – 13,333 shares, Edward Morgan – 250 shares; and Stephanie Mach – 250 shares). These shares were cancelled as of August 27, 2015 and are thus no longer available to be registered. As a result of this deregistration, 4,574,931 shares remain registered for sale pursuant to the Registration Statement.

On August 4, 2015, David Phu again bought 200 shares; on August 6, 2015 Peggy Chen again bought 1,000 shares, on August 13, 2015 Gurudas Somadder again bought 13,333 shares; on August 12, 2015 Edward Morgan again bought 250 shares; and on August 12, 2015 Stephanie Mach again bought 250 shares. These investors allowed the Company to not refund their money for the cancelled shares and to use money previously paid for the purpose of the purchase of the new shares. These 15,033 new shares will not be registered as part of the Registration Statement, this post-effective amendment, or any future post-effective amendment.

There are no agreements between the company and any selling security holder pursuant to which the shares subject to this Registration Statement were issued.

PLAN OF DISTRIBUTION

The selling security holders may sell some or all of their shares at a fixed price of $0.75 per share until our shares are quoted in the OTCQX or OTCQB marketplace of OTC Link and thereafter at prevailing market prices or privately negotiated prices or in transactions that are not in the public market. Prior to being quoted in the OTCQX or OTCQB marketplace of OTC Link, shareholders may sell their shares in private transactions to other individuals. Although our Common Stock is not listed on a public exchange, we will be filing to obtain a quotation in the OTCQX or OTCQB marketplace of OTC Link concurrently with the filing of this prospectus. In order to be quoted in the OTCQX or OTCQB marketplace of OTC Link, a market maker must file an application on our behalf in order to make a market for our Common Stock. There can be no assurance that a market maker will agree to file the necessary documents with FINRA, which regulates the OTCQX and OTCQB marketplaces of OTC Link, nor can there be any assurance that such an application for quotation will be approved. However, sales by selling security holder must be made at the fixed price of $0.75 until a market develops for the stock.

Once a market has developed for our Common Stock, the shares may be sold or distributed from time to time by the selling stockholders, who may be deemed to be underwriters, directly to one or more purchasers or through brokers or dealers who act solely as agents, at market prices prevailing at the time of sale, at prices related to such prevailing market prices, at negotiated prices or at fixed prices, which may be changed. The distribution of the shares may be effected in one or more of the following methods: