O
- Ocean Hughes
- Oceane Meklemberg
- Odin Helgheim
- Odone
- Odyr
- Official Gabby's Dollhouse
- Ofra Layla Isler
- Oge Mora
- OH
- Oh! Great
- Oiry Stéphane
- OisÃn McGann
- Oisin McGann
- Oksana Bula
- Oksana Drachkovska
- Okura
- Ola Krzanowska
- Ola Snimshchikova
- Olaf Falafel
- Olaus J. Murie
- Oldřich Jelínek
- Oldřich Kulhánek
- Olena Kvitka
- Olga Baumert
- Olga Baumertová
- Olga Čechová
- Olga Demidova
- Olga Herrera
- Olga Ptáčková
- Olga Skomorokhova
- Olga Tesařová
- Olga Václavková
- Olga Veselá
- Olga Yakubovskaya
- Olga Zakis
- Oľga Zakus
- Olha Rebdelo
- Olia Muza
- Oliveares
- Oliver Averill
- Oliver Caviglioli
- Oliver Coipel
- Oliver Daumas
- Oliver Fernando Barrón Rodríguez
- Oliver Jeffers
- Oliver Latyk
- Oliver Munden
- Oliver Pugh
- Oliver Uberti
- Oliver Vatine
- Olivia Bargman
- Olivia Daisy Coles
- Olivia Girgis
- Olivia Lomenech Gill
- Olivia Samson
- Olivier Coipel
- Olivier Ledroit
- Olivier Tallec
- Olle Trottestam
- Ollie Cuthbertson