- 1 Olivia Belli
- 2 Olivia Garcia
- 3 Olivia Lane
- 4 Olivia Herdt
- 5 Ona
- 6 Oana Radu
- 7 Olga Lounova
- 8 oneil
- 9 Otis McDonald
- 10 Otilia
- 11 Olivia Dean
- 12 Oceanside
- 13 Ofrin
- 14 Olivia Grace
- 15 Odessa
- 16 OSTON
- 17 Ofelia K
- 18 Omara Portuondo
- 19 Oxana
- 20 Odetta
- 21 Orkid
- 22 Ornella Vanoni
- 23 Ofelia
- 24 Olivia Addams
- 25 Orianthi
- 26 Ony
- 27 Olga Glazova
- 28 One-T
- 29 Oh Susanna
- 30 Oceana