Tony O'Malley (born 15 July 1948, Bushey, Hertfordshire) is a British composer, singer, arranger, and keyboard player. He was the keyboardist for Arrival who had a #8 UK hit with "Friends" (written by Terry Reid) in 1970, and the hit "I Will Survive", written and arranged by fellow Arrival member Frank Collins. He joined 10cc in 1976, after the departures of Kevin Godley and Lol Creme, and played on their live album, Live and Let Live.
O'Malley lived and worked in Georgia for four years, where he became a national television star, leaving in 2008 for his new domicile, Brussels. He has worked with Pino Palladino, Laurence Cottle, Andy Newmark, Hamish Stuart, Alan Spenner, Jim Mullen, Adam Phillips, Jody Linscott, Ash Soan, Mel Collins, Mark Smith, Mornington Lockett, Jeremy Stacey, Ian Thomas and Neil Hubbard.
In May 2008, O'Malley was part of the temporarily reformed 1970s jazz funk band Kokomo, with Mel Collins, Neil Hubbard, Mark Smith, Adam Phillips, Andy Hamilton, Bernie Holland, Glen Le Fleur, Paddy McHugh, Dyan Birch and Frank Collins, which also included performances by Eddy Armani and Franke Pharaoh.
O'Malley has formed a band, singing and playing Hammond organ, with Belgian musicians Frank De Ruyter (tenor sax), Patrick Deltenre (guitar), Frédéric Jacquelmin (drums), and the French bassist Thierry Fandant.
Tony O'Malley is the brother of playwright Mary O'Malley, who wrote the plays Once a Catholic and Oy Vay Maria.