Dodgy and The 2 Bears are also added to Dorset event bill
The Manchester band, who recently reformed with their original line-up, will play on the final night of the three-day bash on July 29 at Lulworth Castle in Dorset.
Frontman Shaun Ryder said:
Me and the band are mega-excited to be playing at Camp Bestival. We have heard the crowd are amazing and we will definitely put on a great show.
They join previously announced headliner Hot Chip, who play on the festival’s opening night (July 27).
Happy Mondays are due to play 11 dates including a homecoming show at Manchester Evening News Arena, with support coming from Inspiral Carpets in May.