Artists: O
108 artists starting with “O” that have charted on alternative rock radio countdowns.
- O Positive 3
- O.A.R. 15
- O.M.D. (Orchestral Manoeuvres In The Dar 7
- The O'Jays 3
- Oasis 520
- Obediah Parker 1
- Oberhofer 1
- Ocean Alley 23
- The Ocean Blue 49
- Ocean Colour Scene 7
- Ocean Grove 1
- October Project 1
- Odd Mob 1
- The Odds 11
- Odette 3
- Of Mice & Men 4
- Of Monsters And Men 51
- Of Montreal 1
- Off The Cross 1
- Offcutts 1
- Offpsring 1
- The Offspring 481
- The Offsrping 1
- ofra Haza 3
- Ogden Edsl 4
- Oil Boom 1
- Oingo Boingo 247
- OK Go 74
- Okkervil River 6
- Old 97's 28
- Old Crow Medicine Show 8
- Old Mervs 4
- Oldham Tinkers 1
- Oleander 11
- Olive 2
- Oliver Sim 1
- Oliver Tree 5
- Oliver Trolley 1
- Olivia Dean 6
- Olivia Dean & Leon Bridges 1
- Olivia Rodrigo 16
- Olivia Vedder 1
- Omar Apollo 2
- OMC 6
- On 3
- Ondara 4
- One Day 1
- One Day As A Lion 4
- One Dove 1
- One Eskimo 4
- One Man's Opinion 1
- One Minute Silence 1
- One Republic 1
- One Side Zero 1
- One Star Hotel 1
- One Thousand Violins 1
- One Track Brain 1
- One Way Ride 1
- The Only Ones 12
- ONR 1
- Opal 1
- Operation Md 1
- Operator 2
- Operator Please 2
- Opeth 8
- OPM 8
- Opus III 2
- The Orb 28
- Orbans 1
- Orbit 5
- Orbital 11
- Orbital & Angelo Badalamenti 1
- Orchestral Manoeuvres in the Dark 138
- Orchestral Manoeuvres in the Dark (OMD) 1
- Orchestral Manouvers in Dark 2
- Orchestral Manouvers in the Dark 3
- Orgy 54
- The Origin 7
- Original Cast Recording / Lin-Manuel Miranda 2
- Orson 1
- Orville Peck 9
- Orville Peck and Beck 1
- Orwells 3
- Oscar and the Wolf 6
- Ostrogoth 4
- OTEP 1
- Other Star People 1
- Otherwise 2
- Otis Redding 32
- Ou Est le Swimming Pool 2
- Our Daughters Wedding 7
- Our Lady Peace 181
- Ours 2
- Out of Your Mouth 2
- The Outfield 20
- Outkast 77
- The Outlaws 15
- Outline 1
- Over The Rhine 8
- Overlord X 1
- Owl City 3
- Owl Eyes 2
- Owsley 2
- OXO 1
- Ozark Henry 1
- Ozomatli 3
- Ozzy Osbourne 98
- Ozzy Osbourne/Primus 1