6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2023

Commission File No. 000-56391

Greenbriar Sustainable Living Inc.
(Translation of registrant's name into English)

632 Foster Avenue Coquitlam, British Columbia, Canada V3J 2L7

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F

Form 20-F ☑ Form 40-F ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1) ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7) ☐

SUBMITTED HEREWITH

Exhibits

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Greenbriar Sustainable Living Inc.

/s/ Jeff Ciachurski

______________________________________ Jeff Ciachurski Chief Executive Officer

Date: December 11, 2023

Greenbriar Sustainable Living Inc.: Exhibit 99.1 - Filed by newsfilecorp.com

NEWS RELEASE

Greenbriar Provides Water Update

Phoenix, Arizona, December 11^th^, 2023 - Greenbriar Sustainable Living Inc. (TSXV: GRB) (OTC: GEBRF) ("Greenbriar" or the "Company") is pleased to announce the following water update.

Claudia Elliott, a reporter for the Tehachapi News, who has been conducting very biased reporting of late, today published an article where Ms. Elliott quotes an official at the California Department of Real Estate, named Christina Jiminez.

The verbatim statements according to Claudia Elliot, from the DRE spokesperson, Christina Jiminez, reflects a fundamental misunderstanding of petitions filed pursuant to the California Environmental Quality Act ("CEQA"), and more specifically, the petition filed by the Water District. Fundamentally, CEQA is a process-based law aimed at requiring local governments to appropriately consider the environmental impacts of a project. Here, the city developed a water supply assessment ("WSA") for the project demonstrating the adequacy of short-term and long-term water supplies for the project. The district's lawsuit challenges the adequacy of that analysis, not the actual "delivery of domestic water" to the project. If, as requested by the district, the court were to find the analysis inadequate, the city may revise and reissue the WSA to address any inadequacies and move forward with fully entitling the project. Only after the construction of the project, will the DRE be requested to issue the final white report (Public Report) for the project. Any potentially required analysis of water supplies will be resolved well before then.

As Jeff Ciachurski was not party to a NDA on the second round of settlement discussions with the water district, the undersigned can clearly state that correspondence from the district emphatically state that more than adequate water exists for the project, and further, the engineering documents provided to all parties for the 2020 RUWMP report (that the district is now intentionally almost 4 years late in filing), clearly supports the WSA as provided by the city's independent professional engineers.  The district litigation is frivolous, vexatious, without merit, and a ploy for the district to misuse and abuse its powers by trying to be an urban planning agency, (which it is not), and use their misguided litigation to once again, try and take more water supplies for themselves, because certain water district members are large Ag land owners, and therefore divert water for their own commercial benefit, whether Ag use or their own attempted housing projects.

The undersigned has on the record referred the water district to the Kern County District Attorney for investigation.

About Greenbriar Capital Corp

Greenbriar is a leading developer of sustainable real estate and renewable energy. With long-term, high impact projects and led by a successful industry-recognized operating and development team, Greenbriar targets deep valued assets directed at accretive shareholder value.

ON BEHALF OF THE BOARD OF DIRECTORS

"Jeff Ciachurski"

Jeffrey J. Ciachurski

Chief Executive Officer and Director

Ph: 949-903-5906

The TSX Venture Exchange has not reviewed and does not accept responsibility for the accuracy or adequacy of this release. Neither the TSX Venture Exchange nor its Regulation Service Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

This news release includes "forward-looking statements" and "forward-looking information" within the meaning of Canadian securities laws and United States securities laws (together, "forward-looking statements"). All statements included in this news release, other than statements of historical fact, are forward-looking statements including, without limitation, statements with respect to the Debenture and the use of gross proceeds. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as "anticipate", "believe", "plan", "estimate", "expect", "potential", "target", "budget", "propose" and "intend" and statements that an event or result "may", "will", "should", "could" or "might" occur or be achieved and other similar expressions and includes the negatives thereof.

Forward-looking statements are based on a number of assumptions and estimates that, while considered reasonable by management based on the business and markets in which the Company operates, are inherently subject to significant operational, economic, and competitive uncertainties, risks and contingencies. These include assumptions regarding, among other things: general business and economic conditions. There can be no assurance that forward-looking statements will prove to be accurate and actual results, and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from the Company's expectations include those described under the heading "Risks and Uncertainties" in the Company's most recently filed MD&A (a copy of which is available under the Company's SEDAR profile at www.sedar.com*). The Company does not undertake to update or revise any forward-looking statements, except in accordance with applicable law.*

- 2 -
	"Greenbriar Sustainable Living Inc. was recognized as a TSX Venture 50® company in 2014 and 2023.<br>TSX Venture 50 is a trade-mark of TSX Inc. and is used under license.”<br><br> <br>Toronto Venture Exchange Symbol: GRB	US OTC Symbol: GEBRF