- OyijonRayhon
- Olvide RespirarDavid Bisbal (大卫·比斯巴尔)
- Omaggio A Federico E GiuliettaCaetano Veloso
- ONE AND ONLY (唯一)中山美穗
- Once Upon A TimeDown Low
- OrfeuCaetano Veloso
- OorDavid Bisbal (大卫·比斯巴尔)
- Other SideMaya Jane Coles
- Outras PalavrasCaetano Veloso
- One DayDown Low
- 내 사람친구의 연애 OST Part.2 (我朋友的恋爱 OST Part.2)러비 (Lovey)
- ONEBONNIE PINK (粉红邦妮)
- OhrwurmTommy Trash
- Oxygen (feat. Daisy Guttridge)Tommy Trash
- One PeopleSebastien
- On the 5th FloorRie Sinclair
- Out Of The DarkDubVision
- OneSebastien
- Often (Lido Remix)Lido
- 디어 마이 프렌즈 OST - Part.1 (Dear My Friends OST - Part.1|我亲爱的朋友们 OST - Part.1)케빈오 (kevin O)
- 스토브리그 OST Part.2 (棒球大联盟 OST Part.2)케빈오 (kevin O)
- 일단 뜨겁게 청소하라 OST Part.9 (先热情的清扫吧 OST Part.9)케빈오 (kevin O)
- 열두밤 OST Part.1 (채널A 미니시리즈) (十二夜 OST Part. 1 (Channel A Mini Series))케빈오 (kevin O)
- 금수저 OST Part.3 (金汤匙 OST Part.3)케빈오 (kevin O)
- 설강화 OST Part.5 (雪降花 OST Part.5)케빈오 (kevin O)
- Oh, My Sun케빈오 (kevin O)
- 시카고 타자기 OST Part.4 (芝加哥打字机 OST Part.4)케빈오 (kevin O)
- 경우의 수 OST Part.8 (境遇之数 OST Part.8)케빈오 (kevin O)
- 맨홀 OST Part.9 (MANHOLE OST Part.9)케빈오 (kevin O)
- Ona i onSylwia Grzeszczak
- Only One (Alt Version)Lido
- Only knightB-PROJECT
- Origin of Love発熱巫女～ず (发热巫女)
- On FireLuke Bond
- On Fire (Aly & Fila Remix)Luke Bond
- Options (The Remixes)Stephen Marley
- Official Live: 101 Proof (Explicit)Pantera (潘特拉)
- Oh My LivTolein
- Once MoreLuke Bond
- Our SongsBuono! (ボーノ)
- Options (Explicit)Stephen Marley
- Only LoveLuke Bond
- Old SoulStephen Marley
- Our AnthemLuke Bond
- Only When I Lose MyselfNouvelle Vague
- Over NowDave Thomas Junior
- Oh MyDJ Drama (DJ戏剧)
- On SongBrian Kennedy (Brian Kennedy)
- Open The Box冯寅夕君
- One Woman ManGeorge Jones (乔治·琼斯)
- OceansPetit Biscuit
- Oriental Side of Chillout Music: Collection of Fresh 2019 Electronic Music with Oriental Sounds & Soul, Songs Perfect for Dancing & Relaxing#1 Hits Now
- 내일도 출근! OST Part.6 (See You At Work Tomorrow! (Original Television Soundtrack), Pt. 6)방예담 (房艺谈)
- 찬란한 너의 계절에 OST Part.4 (In Your Radiant Season (Original Television Soundtrack) Pt. 4) (在你灿烂的季节 OST Part.4)방예담 (房艺谈)
- OasisMr.DADA
- 손해 보기 싫어서 OST Part 7 (No Gain No Love, Pt. 7 (Original Soundtrack)) (因为不想吃亏 OST Part 7)방예담 (房艺谈)
- Officially Cool방예담 (房艺谈)
- 브랜딩 인 성수동 OST Part.3 (品牌in圣水洞 OST Part.3)방예담 (房艺谈)
- ONLY ONE방예담 (房艺谈)
- Om Shanti·静Mr.DADA
