- The Outcasts -- The Outlet
- The Outlets -- The Outta Controllers
- The Outta Sites -- The Ovulators
- The Owen Family -- The Ozarks
- The Ozzard of Wiz -- The Packers
- The Packman -- the paint movement
- The Paint Sisters -- The Palladinos
- The Palladium Orchestra -- The Pangs
- The Panic Attacks -- The Papaya Kings
- The Paper and the Plane -- The Parade Schedule
- The Paradise -- The Pariahs
- The Paris Conservatoire Orchestra -- The Parrots
- The Parselmouths -- The Particles