Ohren, Andrew(? - ) USA
Oickle, Lucas(1991 - ) Canada
Ojakangas, Celka(? - ) USA
Ojeda-García, Isandro(1989 - ) Spain
Okabe, Fujio(1947 - ) Japan
Okabe, Norikazu(? - ) Japan
Okada, Ayumi(? - ) Japan
Okada, Kazuko(? - ) Japan
Okada, Kyoko(1932 - ) Japan
Okasaka, Keiki(1940 - ) Japan
Okawara, Yosie(1903 - 1935) Japan
Okazaki, Mitsuharu(1935 - ) Japan
Okoye, Nkeiru(? - ) USA
Ólafsson, Kjartan(1958 - ) Iceland
Olavide, Gonzalo de(1934 - 2005) Spain
Olbrisch, Franz Martin(1952 - ) Germany
Olczak, Krzysztof(1956 - ) Poland
Oldigs, Mirco(1975 - ) Germany
Oldrini, Norberto(1968 - ) Italy
Olencki, Weston(? - ) USA
Oliva, Julio César(1947 - ) Mexico
Oliva, Michael(? - ) United Kingdom
Olivari, Arcángel Castillo(1959 - ) Venezuela
Olive, Vivienne(1950 - ) Australia
Oliveira, Fernando Corrêa de(1921 - 2004) Portugal
Oliveira, Jailton de(1968 - ) Brazil
Oliveira, Jamary(1944 - ) Brazil
Oliveira, João Pedro(1959 - ) Portugal