Jon Courtney is a British musician best known as a singer, guitarist, keyboard player and songwriter for the progressive rock band Pure Reason Revolution.

[3][8] The band's name was inspired by Courtney's thesis on the nature of genius and its application to Beach Boy Brian Wilson, for which he studied Critique of Pure Reason by Immanuel Kant.

Following the breakup of Pure Reason Revolution in 2011, Courtney moved to Berlin, where he formed the electronic-rock band Bullet Height together with Sammi Doll, a performer with Kat Von D, Losers and IAMX.

[6] In 2005, Gigwise.com, which termed Courtney the "creative force" behind the band, described his music "amazingly intricate",[13] while Classic Rock Magazine, speaking of Amor Vincit Omnia, commented, "once other-worldly, PRR now sound like some mutant offspring of The Chemical Brothers & NIN".

[15] Prog magazine called Above Cirrus "densely packed...a multi-faceted beast that revels in Floydian waves of intoxicated bliss before erupting into an apocalyptic fury".