| NAME | DATES | CONTINENT | NATION |
| O Aleijadinho (Antonio Francisco Lisboa) |
1738 - 1814 |
 |
Brazil |
| Oberholster, Evan |
1956 - living |
 |
South Africa |
| Octave, Jean-Francois |
1955 - living |
 |
Belgium |
| Oda Toshimi |
20th century |
 |
Japan |
| Odegaard, Olaf |
1938 - 1997 |
|
Norway |
| Ogrinc, Will H. L. |
living |
|
Holland |
| Okawa Tatsuji |
1904 - 1994 |
|
Japan |
| Okumura Masanobu |
1686 - 1764 |
|
Japan |
| Okoth, Orokie |
1979 - living |
|
Kenia |
| Ollila, Yrjo |
1887 - 1932 |
|
Finland |
| Oltos painter |
520 BC |
|
Greece |
| Onesimos |
5th c. BC |
|
Greece |
| Opanasenko, Oksana |
1973 - living |
|
Ukraine |
| Opisso i Cardona, Alfred |
1907 - 1980 |
|
Spain |
| Orbetto (Alessandro Turchi) |
1578 - 1649 |
|
Italy |
| Orlowsky, Boris |
19th c. |
|
Russia |
| Ortolano (Givanni Battista Benvenuti) |
1487 - 1527 |
|
Italy |
| Osamu |
living |
|
Japan |
| Osborne, Philip |
1926 - 1994 |
|
U.K. |
| Ouline, A. |
20th c. |
|
France |
