Exhibit 5.1

	140 Scott Drive
	Menlo Park, California 94025
	Tel: +1.650.328.4600 Fax: +1.650.463.2600
	www.lw.com
	FIRM / AFFILIATE OFFICES
	Austin	Milan
	Beijing	Munich
	Boston	New York
	Brussels	Orange County
	Century City	Paris
	Chicago	Riyadh
October 4, 2022	Dubai	San Diego
	Düsseldorf	San Francisco
	Frankfurt	Seoul
	Hamburg	Shanghai
Atlassian Corporation	Hong Kong	Silicon Valley
350 Bush Street, Floor 13	Houston	Singapore
San Francisco, California 94104	London	Tel Aviv
	Los Angeles	Tokyo
	Madrid	Washington, D.C.

Re: Atlassian Corporation Post-Effective Amendment No. 1 to Registration Statements on Form S-8

To the addressee set forth above:

We have acted as special counsel to Atlassian Corporation, a Delaware corporation (the “Company”), in connection with its filing on the date hereof with the Securities and Exchange Commission (the “Commission”) of Post-Effective Amendment No. 1 (the “Amendment”) to five registration statements on Form S-8 (Registration Nos. 333-208436, 333-214424, 333-221342, 333-228124 and 333-266998) previously filed by Atlassian Corporation Plc, a public company limited by shares incorporated under the laws of England and Wales and the Company’s predecessor, with respect to the adoption of such registration statements by the Company pursuant to Rule 414 under the Securities Act of 1933, as amended (the “Securities Act”). Such registration statements on Form S-8, as amended by the Amendment, are referred to herein as the “Registration Statements.” In connection with such representation, the Company has advised us that shares (“Shares”) of Class A common stock of the Company, par value $0.00001 per share, may be issuable or become issuable pursuant to grants or awards under the employee plans (the “Plans”) set forth on Exhibit A hereto.

This opinion is being furnished in connection with the requirements of Item 601(b)(5) of Regulation S-K under the Securities Act, and no opinion is expressed herein as to any matter pertaining to the contents of the Registration Statements, other than as expressly stated herein with respect to the issuance of the Shares.

As such counsel, we have examined such matters of fact and questions of law as we have considered appropriate for purposes of this letter. With your consent, we have relied upon certificates and other assurances of officers of the Company and others as to factual matters without having independently verified such factual matters. We are opining herein as to the General Corporation Law of the State of Delaware (the “DGCL”), and we express no opinion with respect to any other laws.

October 4, 2022

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Subject to the foregoing and the other matters set forth herein, it is our opinion that, as of the date hereof, when the Shares shall have been duly registered on the books of the transfer agent and registrar therefor in the name or on behalf of the purchasers, and have been issued by the Company for legal consideration in excess of par value in the circumstances contemplated by the Plans, assuming in each case that the individual issuances, grants or awards under the Plans are duly authorized by all necessary corporate action and duly issued, granted or awarded and exercised in accordance with the requirements of law and the Plans (and the agreements and awards duly adopted thereunder and in accordance therewith), the issuance and sale of the Shares will have been duly authorized by all necessary corporate action of the Company, and the Shares will be validly issued, fully paid and nonassessable. In rendering the foregoing opinion, we have assumed that the Company will comply with all applicable notice requirements regarding uncertificated shares provided in the DGCL.

This opinion is for your benefit in connection with the Amendment and may be relied upon by you and by persons entitled to rely upon it pursuant to the applicable provisions of the Securities Act. We consent to your filing this opinion as an exhibit to the Amendment. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission thereunder.

Sincerely,

/s/ Latham & Watkins LLP

October 4, 2022

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Exhibit A

Plans

Amended and Restated 2015 Share Incentive Plan

Amended and Restated 2013 U.S. Share Option Plan

Amended and Restated 2015 Employee Share Purchase Plan