6-K

UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

Washington,D.C. 20549

FORM 6-K

REPORTOF FOREIGN PRIVATE ISSUER

PURSUANTTO RULE 13A-16 OR 15D-16

UNDERTHE SECURITIES EXCHANGE ACT OF 1934

For themonth of July, 2023Commission File Number: 001-35627

MANCHESTERUNITED PLC

(Translation of registrant’s name into English)

Old Trafford

ManchesterM16 0RA

UnitedKingdom

(Address of principal executive offices)

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 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).  ¨

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.

Date: July 31, 2023

EXHIBIT INDEX

Exhibit99.1

ManchesterUnited PLC Announces Renewal of Adidas Partnership

MANCHESTER, England – (BUSINESS WIRE) –31 July 2023 – Manchester United plc (NYSE: MANU), is pleased to confirm that it has renewed its principal partnership with adidas, as the club’s official kit supplier. The new agreement will continue the partnership for a further 10 years until June 2035 and has a minimum cash guarantee of GBP 900 million, subject to certain adjustments.

AboutManchester United

Manchester United is one of the most popular and successful sports teams in the world, playing one of the most popular spectator sports on Earth. Through our 145-year football heritage we have won 67 trophies, enabling us to develop what we believe is one of the world’s leading sports and entertainment brands with a global community of 1.1 billion fans and followers. Our large, passionate, and highly engaged fan base provides Manchester United with a worldwide platform to generate significant revenue from multiple sources, including sponsorship, merchandising, product licensing, broadcasting and matchday initiatives which in turn, directly fund our ability to continuously reinvest in the club.

Contacts