- Ofra Haza
- Ognjen Amidžić
- Ognjen Jaramaz
- Ognjen Kuzmić
- Ognjen Vranješ
- Olajide William Olatunji (KSI)
- Olga Danilović
- Olivera Katarina
- Olivera Kovačević
- Olivera Ćirković
- Oliver Dragojević
- Oliver Frljić
- Oliver Ivanović
- Olja Bajrami
- Olja Crnogorac
- Onore de Balzak
- Orlando Blum (Orlando Bloom)
- Oskar Davičo
- Oskar Duarte
- Oskar Vajld (Oscar Wilde)
- Otfrid Projsler