Julia Holter has also been billed for the Welsh festival's 14th edition.
James Blake will headline Green Man Festival 2016.
Though it's traditionally a place for indie rock bands and folk acts, the family-friendly festival has always dipped a toe into electronic music. This year's contingent is led by Blake, who tops the bill alongside Wild Beasts and Belle & Sebastian, with additional slots for Julia Holter and Floating Points, who will perform live with his 11-piece ensemble. Other highlights include Fat White Family, Battles and Unknown Mortal Orchestra.
For the lineup in full, head to Green Man's official website.