Artists: O
187 artists starting with “O” that have charted on alternative rock radio countdowns.
- O Positive 3
- O.A.R. 38
- O'Brother 1
- The O'Jays 8
- Oakenfold 1
- Oasis 657
- Obediah Parker 1
- Oberhofer 3
- Obongjayar 1
- Ocean Alley 23
- The Ocean Blue 50
- Ocean Colour Scene 8
- Ocean Grove 1
- Oceansize 1
- October Project 5
- The Octopus Project 1
- Odd Mob 1
- The Odds 11
- ODESZA 4
- Odesza w. Leon Bridges 1
- Odette 3
- Of A Revolution 1
- Of Mice & Men 8
- Of Monsters And Men 183
- Of Montreal 13
- Off The Cross 1
- Off With Their Heads 1
- Offcutts 1
- Office Dog 1
- Offpsring 1
- The Offspring 831
- The Offsrping 1
- ofra Haza 3
- Ogden Edsl 4
- Oh He Dead 4
- The Oh Hellos 2
- Oh Wonder 8
- Ohgr 1
- Ohio Players 5
- Oil Boom 1
- Oingo Boingo 261
- Ojr 4
- OK Cowgirl 1
- OK Go 119
- Okey Dokey 4
- Okkervil River 21
- The Okmoniks 1
- Ol' Dirty Bastard 2
- Old 97's 95
- Old Baby 1
- Old Crow Medicine Show 37
- Old Man Brown 1
- Old Mervs 4
- Old School Freight Train 1
- Old Sea Brigade 2
- Oldham Tinkers 1
- Oleander 19
- Olive 2
- Oliver Nelson 2
- Oliver Sim 1
- Oliver Tree 10
- Oliver Trolley 1
- Oliver Wood 3
- Olivia Dean 10
- Olivia Dean & Leon Bridges 3
- Olivia Fox 2
- Olivia Jean 2
- Olivia Newton John 6
- Olivia Newton-John & John Travolta 1
- Olivia Rodrigo 23
- Olivia Tremor Control 1
- Olivia Vedder 1
- Ollella 1
- Olu Dara 1
- Omar Apollo 6
- Omar Souleyman 2
- OMC 12
- Omicron J. Trauma 1
- Omniblank 2
- On 3
- Once Around 2
- One 3
- One Day 1
- One Day As A Lion 11
- One Dove 1
- One Eskimo 30
- One Line Drawing 1
- One Man's Opinion 1
- One Minute Silence 1
- One Republic 7
- One Side Zero 1
- One Star Hotel 1
- One Thousand Violins 1
- One Track Brain 1
- One Way Ride 1
- Oneohtrix Point Never 1
- The Only Ones 15
- ONR 2
- Onra 1
- The Oohlas 1
- Opal 1
- Open Mike Eagle 1
- Operation Ivy 1
- Operation Md 1
- Operator 2
- Operator Please 2
- Opeth 8
- OPM 10
- Opus III 2
- Ora the Molecule 2
- Oracle Sisters 1
- Orange 9mm 1
- Orange Juice 3
- The Orb 35
- Orbans 1
- Orbit 7
- Orbital 21
- Orbital & Angelo Badalamenti 1
- Orchestra Gold 2
- Orchestral Maneuvers in the Dark 1
- Orchestral Manoeuvres in the Dark 161
- Oren Ambarchi, Johan Berthling & Andreas Werliin 4
- Orgy 80
- The Origin 7
- Original Cast Recording / Lin-Manuel Miranda 2
- Orion Sun 2
- Orla Gartland 9
- The Orphan The Poet 2
- Orquesta Akokán 1
- Orson 1
- Orville Peck 30
- Orville Peck and Beck 3
- Orwells 11
- Oscar and the Wolf 6
- Oscar Isaac & Marcus Mumford 1
- Oscar Peterson 1
- Oshima Brothers 4
- Osibisa 1
- Oso Oso 1
- Ostrogoth 4
- Oswald 1
- OTEP 2
- Other Americans 1
- Other Colors 1
- Other Star People 1
- Otherwise 3
- Otis Redding 72
- Otis Rush 1
- Otis Sandsjö 1
- Otis Taylor 1
- Otyken 1
- Ou Est le Swimming Pool 2
- Our Daughters Wedding 7
- Our Lady Peace 248
- Our Native Daughters 1
- Ours 3
- Out of Your Mouth 2
- Outcalls 4
- The Outdoor Type 1
- Outer Spaces 1
- The Outfield 47
- The Outfit 1
- Outhouse 1
- Outkast 129
- The Outlaws 58
- Outline 1
- Outsides 2
- Oval 1
- Over The Rhine 11
- Overcoats 7
- Overlord X 1
- Overseer 4
- Oweihops 1
- Owen 1
- Owen Stewart 1
- Owl City 24
- Owl Eyes 2
- Owsley 2
- Oxeye Daisy 1
- OXO 1
- Oysterhead 2
- Ozark Henry 1
- Ozark Mountain Daredevils 2
- Ozomatli 15
- Ozzy Osbourne 735
- Ozzy Osbourne & Lita Ford 1
- Ozzy Osbourne/Primus 1