Artists starting with O
- Operation Ivy
- Operator
- Operator Please!
- Operators
- Opetaia Foa’i
- Opetaia Foa’i & Lin-Manuel Miranda
- Opeth
- OPG
- Opgezwolle
- Opia
- Opium
- Opium, Pyhimys, Juulia
- OPM
- Oppenheimer Analysis
- Oppi & Stephen Niday
- Oprah Winfrey
- Opshop
- Optik Russia
- Optimo
- Optimus
- Optimus Gang
- Optimus Rhyme
- OptycNerd
- Opus
- Opus III
- Opus Orange
- Opwekking
- OPYI
- OQJAV
- Oques Grasses
- OR3O
- Oracle
- Oral Bee
- Oral Bee & Mr. Pimp-Lotion
- Oran "Juice" Jones
- Orange & Lemons
- Orange (VNM)
- Orange Blue
- Orange Caramel (오렌지캬라멜)
- Orange Goblin
- Orange Is The New Black
- Orange Juice
- ORANGE RANGE
- Orangutang
- Oranssi Pazuzu
- Oratorio The World God Only Knows
- ORB
- Orbit Culture
- Orbital
- Orbiter
- Orbs
- Orchards
- Orchestral Manoeuvres in the Dark
- Orchid
- Orchid (Metal)
- Orchid Mantis
- Ordem Natural
- Orden Ogan
- Ordo Rosarius Equilibrio
- Oré (FR)
- OREGONTRAIL
- Oreia
- Oreia
- Orelha Negra
- Orelia Has Orchestra
- OrelSan
- Oren Lavie - אורן לביא
- Oren Major
- Oreo
- ORG only Mass
- Organectomy
- Organism 12
- Organismen
- Organized Konfusion
- Organized Noize
- Organized rhyme
- Orgasmic & Fuzati
- Orgasmus und Schwartz
- Orgi-E
- Orgone
- Orgy
- Orhan Gencebay
- Orhan Hakalmaz
- Orhan Ölmez
- Ori Shochat - אורי שוחט
- Oriana
- Orianthi
- Orient Pearl
- Oriente
- Orietta Berti
- Origa
- Origami Angel
- Origami Beats
- Origin
- Original
- Original (German) Cast of “Tanz Der Vampire”
- Original 2017 Broadway Revival Cast of the Hello, Dolly!
- Original Australian Cast of Cats
- Original Broadway Cast of 1776
- Original Broadway Cast of 25th Annual Putnam County Spelling Bee
- Original Broadway Cast of 42nd Street
- Original Broadway Cast of Amélie
- Original Broadway Cast of Amélie
- Original Broadway Cast of An American in Paris
- Original Broadway Cast of Anyone Can Whistle