Artists
- Aasmund Olavsson vinje
- Abe Olman
- Allie Ollie Woodson
- Amélie Oliviero-Denaës
- Arthur Oldham
- Aulikki Oksanen
- Bengt Ollén
- Betty Olivero
- Brotherhood Of Man
- Chairmen Of The Board
- Chauncey Olcott
- David Oistrakh
- Dino Olivieri
- Eero Ojanen
- Friiti Ojala
- Geoffrey Ohara
- George Oldroyd
- Gonzalo de Olavide
- Graham Oliver
- Henning Olerud
- Igor Oistrakh
- Ingolf Olsen
- Jack Oliver
- Jacob Olofsson
- Jacques Offenbach
- Janne Olrik
- Johann Christoph Oley
- John Ogden
- John Ogdon
- John Oliver
- John Olon-Scrymgeour
- João Pedro Oliveira
- Juha Oksanen
- Kele Okereke
- Kevin Olson
- Kim Oliver
- King Oliver
- Lindon Oldham
- Lotar Olias
- Louis Oliveira
- Luka Okros
- Martin Spang Olsen
- Maurice Ohana
- Michael Oesterle
- Michał Kleofas Ogiński
- Mike Oldfield
- Milt Okun
- Nick Oliveri
- Nino Oliviero
- O Olson
- Ola Olenzo Ollén
- Pamela Oland
- Peter Paul Olejar
- Poul Rovsing Olsen
- Queens Of The Stone Age
- Raz Olsher
- Reinhard Ohse
- Romeo Olivieri
- Ruti Olajugbagbe
- Set It Off
- Seung-Won Oh
- Stephen Oliver
- Sy Oliver
- Terje Olsen
- Theodor Oesten
- Thomas Olbrich
- Thomas Oliphant
- Thomas Olivers
- Thomas Olorénshaw
- Tiberiu Olah
- Tirso De Olazábal
- Ursula Andkjær Olsen
- W. B. Olds
- Winstrup Olesen
- Yann Ollivo