The figure exceeds the 290,000 members of Bayern Munich’s equivalent programme, previously recognised as the largest in the world.
It is the first time that United’s membership – and that of any football team – has exceeded 300,000, reflecting the growth of our global fan base across every part of the world. United has members in 167 countries.
The number of official Manchester United Supporters’ Clubs has also reached a record level, with 275 in 94 countries.
Collette Roche, Manchester United chief operating officer, said: “Manchester United’s greatest strength is our huge global family of loyal fans, whether match-goers who come to Old Trafford week-in-week-out, or the millions who support us just as passionately from around the world.