Leslie Odom Jr. Songs: Shape of My Heart (& Josh Groban) - Speak Now (One Night in Miami...)
Ofenbach (DJs)
Songs: Shivers (& Ed Sheeran) - Katchi (& Nick Waterhouse) - Be Mine - Party (& Lack Of Afro, Wax & Herbal T) - Head Shoulders Knees & Toes (& Quarterhead & Norma Jean Martine)
Oklahoma! (film) Songs: Oklahoma (Gordon MacRae, Charlotte Greenwood, James Whitmore, Shirley Jones & Jay C. Flippen)
Mike Oldfield
See also: Sally Oldfield
Songs: Moonlight Shadow (& Maggie Reilly) - To France (& Maggie Reilly) - Shadow on the Wall (& Roger Chapman) - Sailing (& Luke Spiller)
Mălina Olinescu Songs: Eu cred (Eurovision Romania)
Olympe Songs: La quête - Born To Die - Frozen - Hakuna Matata (We Love Disney) - Zombie
OMC Songs: How Bizarre
Oliver Onions Songs: Dune Buggy (Altrimenti ci arrabbiamo)
Orchestral Manoeuvres in the Dark
OMD
Songs: Enola Gay - Souvenir - If You Leave (Pretty in Pink) - (Forever) Live and Die - Maid of Orleans (The Waltz Joan Of Arc)
Otis Day and the Knights
Musical film National Lampoon's Animal House
Songs: Shout - Shama Lama Ding Dong
OV7 Songs: Shabadaba - Enloquéceme (Lidia Ávila, Kalimba Marichal & Oscar Schwebel)