The Dukes of Stratosphear was a pseudonym used by the British rock band XTC in the mid-to-late 1980s, concurrently with XTC's continued musical activities. The project was intended as a homage to 1960s pop and psychedelic music by groups such as The Beatles, Pink Floyd, The Byrds, The Kinks, The Zombies, The Beach Boys, The Small Faces, Jefferson Airplane and The Pretty Things.

The band released two records under this pseudonym, the mini-album 25 O'Clock (1985), and the full-length album Psonic Psunspot (1987). The two releases were compiled onto a single CD under the title Chips from the Chocolate Fireball: An Anthology, which was released simultaneously with the vinyl issue of Psonic Psunspot. The Dukes were also mentioned in the credits of XTC's 1986 album Skylarking, where they were thanked for the loan of their guitars.