Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16 (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-16

under the Securities Exchange Act of 1934

October 19, 2021

Commission File Number 001-37651

Atlassian Corporation Plc

(Exact name of Registrant as specified in its charter)

Not Applicable

(Translation of Registrant’s name into English)

Exchange House

Primrose Street

London EC2A 2EG

c/o Herbert Smith Freehills LLP

(Address of Registrant’s Principal Executive Offices)

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

Form 20-F x 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): ¨

Notice of Annual General Meeting

Atlassian Corporation Plc (the “Company”) is hereby filing its Notice of 2021 Annual General Meeting (the “Notice”), attached as Exhibit 99.1 to this report on Form 6-K and incorporated by reference herein. The Notice was included as part of the Company's shareholder mailing for its 2021 Annual General Meeting to be held on December 2, 2021.

Signature

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