The 'Hope' singer-songwriter announced that he will play the Eden Project as well as a slot at this year's Glastonbury Festival, before going on to dates in Cardiff and London.
The shows are in support of Johnson's forthcoming fifth studio album, currently slated for release in the summer.
Tickets for the Cardiff and London gigs go on sale at 9am this Friday.
Jack Johnson will play the following dates:
- Cornwall Eden Project – June 26
- Glastonbury Festival – 27
- Cardiff Arena – 29
- London O2 arena – 30