Personer O
| O'Brien, Linda | Person | |
| O'Neal, James | Person | |
| Oaks, Agnes | Person | |
| Oberender, Wolfgang | Person | |
| Oberle, Friedrich | Person | |
| Obhölzer, Bertha | Person | |
| Offenbach, Jacques | Person | |
| Ohenoja, Kalevi | Person | |
| Ohms-Quennet, Elly | Person | |
| Oittinen (mies, tanssija) | Person | |
| Ojala, Jarmo | Person | |
| Ojala, Lauri | Person | |
| Ojala, Pemo | Person | |
| Ojamaa, Pekka | Person | |
| Ojanen, Eero | Person | |
| Ojanen, Tiina | Person | |
| Ojanperä, Marja-Helena | Person | |
| Ojapalo, Nelli | Person | |
| Ojutkangas, Kenneth | Person | |
| Okabe-Silvasti, Chieko | Person |