- Oasis
- Obbie Messakh
- Obenk GTA
- Ocan Siagian
- Ocha Dilva
- Ocha Prastya
- Ocha Putri
- Ochi Alvira
- Ocholl Dhut
- Od Kajol
- Oday Akhras
- Ody Malik
- Oji Shah
- Ojo Rusak
- Oka Aza
- Okin
- Okta Isty
- Ola Cristine
- Ola Viola
- Oldskull
- Oliv
- Olivia Norfathir
- Olivia Rodrigo
- Olivia Tanjung
- Olland Tri
- OM KORA
- Om Putra
- Om Syalala
- OM Wawes
- Om Yosh
- Omega Trio
- Omelette
- Omhand V
- Ompong
- Omry Jubi
- Ona Hetharua
- Once
- Oncho Flash
- Oncy (Ungu)
- Ondri
- One Avenue Band
- One Direction
- One Feel
- ONE OK ROCK
- OneRepublic
- Onew (SHINee)
- Oney
- Oni (The Titans)
- Onny Suryono
- Opick
- Opik (Minang)
- Oppie Andaresta
- Orang Dalam
- Orange Marmalade
- Orange Music
- ORAREWEL
- Orbit
- Organik
- ORIND
- Orkes Teruna Ria
- Ornito
- Os Brow
- Osen Hutasoit
- Osha
- Oslan Husein
- OST Crayon Shinchan
- OST Mojacko
- OST Uttaran (India)
- Ost. Pocari Sweat
- Ost. Tendangan Si madun
- Our Story
- Our Streets
- Overall
- Overboy
- Ovhi Firsty
- Ovhy Firsty
- Ovy Sovianti
- Ovy Sovianty
- Owl City
- Ownfriends
- Oxxy
- Oyyik Pujakesuma
- Oza Kioza
- Oziel Zolie
- Ozone
- OZONE Band
