Roger Joseph Manning, Jr. (born May 27, 1966) is an American multi-instrumentalist, songwriter, and founding member of bands Jellyfish, Imperial Drag, The Moog Cookbook, and TV Eyes. He has also spent several years as an integral member of Beck's backing band, and made contributions to several recordings by the band Air. He is currently the session keyboardist for rock supergroup Angels & Airwaves. He is known for his distinctive style playing various analog and digital synthesizers. Electronica, power pop, psychedelia and jazz are his primary genres although he also does session work with a number of artists as well as commercial and soundtrack music. As well as providing session work, he used to work frequently with producer Jerry Finn, through whom he was credited as keyboardist on a number of recordings with pop-punk band Blink-182.

In early 2006, Manning released his long-awaited first solo album in Japan only. That album, Solid State Warrior, was subsequently issued in the U.S. under a different title The Land of Pure Imagination, along with an altered song content. In March 2008, Manning released his second solo album in Japan only. That album, Catnip Dynamite, was eventually released in the U.S. on February 3, 2009. The U.S. release contains three bonus tracks that were recorded during a live performance at Fujifest in Japan. Roger is also credited with playing keyboards on several 2004-2009 works by singer Morrissey.