| Name |
Nationality |
| |
Date of birth |
| Ola Aasvold, Lorents | 
Norway | 
| |
09-08-1988 |
| Oliveira Amorim, António Filipe | 
Portugal |
| |
19-05-1985 |
| Oliveira Andrade, Pedro Manuel |
Portugal |
| |
21-03-1977 |
| Oliveira Barroso, Paulo Manuel |
Portugal |
| |
29-10-1972 |
| Oliveira Batista, Fernando Manuel |
Portugal |
| |
06-07-1967 |
| Olsen Brathovde, Håvard |
Norway |
| |
12-03-1993 |
| Oliveira Carvalho, Alberto Fernando |
Portugal |
| |
05-02-1965 |
| Oliveira Carvalho, Armindo Tiago |
Portugal |
| |
30-04-1996 |
| Oliveira Carvalho, Fernando Alberto |
Portugal |
| |
28-08-1962 |
| Oliveira Cunha, Luis Paulo |
Portugal |
| |
18-12-1993 |
| Oliveira De Marreiros, Fausto Armando | 
The Netherlands |
| |
04-05-1966 |
| Oliveira Eulalio, Afonso |
Portugal |
| |
30-09-2001 |
| Oliveira Fernandes, Ygor | 
Brazil |
| |
00-00-0000 |
| Oliveira Ferreira, Sergio |
Portugal |
| |
11-04-1971 |
| Oliveira Ferreira, Thiago |
Brazil |
| |
12-07-1979 |
| Oliveira Figueiredo, Frederico José |
Portugal |
| |
25-05-1991 |
| Ove Fordal, Arnt |
Norway |
| |
20-02-1985 |
| Ormenese Godoy, Caio |
Brazil |
| |
24-04-1995 |
| Oliveira Gomes, Joaquim Augusto |
Portugal |
| |
21-11-1965 |
| Oliveira Granja, Rony Peterson |
Brazil |
| |
00-00-0000 |
| Oskari Halvorsen, Eirik |
Norway |
| |
21-09-1992 |
| Oliveira Henriques, Mario Paulo |
Portugal |
| |
06-09-1968 |
| Olausen Hermansen, Hermann |
Norway |
| |
23-08-1991 |
| Olander Hjort, Mads | 
Denmark |
| |
29-09-1997 |
| Oliveira Lombizani, Vitor |
Brazil |
| |
00-00-0000 |
| Omarsson Mollerup, Martin |
Denmark |
| |
10-01-1999 |
| Oliveira Monteiro, António José |
Portugal |
| |
27-03-1997 |
| Oliveira Moraes, Ana Laura |
Brazil | 
| |
00-00-2004 |
| Oliveira Morais, Marco |
Portugal |
| |
10-03-1977 |
| Oliveira Neves, Cláudio António |
Portugal |
| |
29-10-1997 |
| Oliveira Neves, Daniel Marciano |
Portugal |
| |
17-03-1980 |
| Odgaard Nielsen, Jesper |
Denmark |
| |
07-07-1984 |
| O'Brien, D. | 
Great Britain |
| |
00-00-0000 |
| O, Ye Song | 
North Korea |
| |
00-00-0000 |
| O´Brien, Conor | 
Canada |
| |
00-00-0000 |
| O´Sullivan, Alex |
Great Britain |
| |
00-00-0000 |
| O'Bee, Kirk | 
United States of America |
| |
09-04-1977 |
| O'Boyle, John | 
Australia |
| |
00-00-0000 |
| O'Boyle, Ryan |
United States of America |
| |
00-00-0000 |
| O'Boyle, Tara | 
Ireland |
| |
00-00-0000 |
| O'Brien, Aaron |
Ireland |
| |
15-11-1994 |
| O'Brien, Aoife |
Ireland |
| |
13-01-2004 |
| O'Brien, B. |
Great Britain |
| |
00-00-0000 |
| O'Brien, B. |
Ireland |
| |
00-00-0000 |
| O'Brien, C.D. |
Australia |
| |
00-00-0000 |
| O'Brien, Caoimhe |
Ireland |
| |
17-04-2002 |
| O'Brien, Con |
Ireland |
| |
00-00-0000 |
| O'Brien, Connie | 
New Zealand |
| |
00-00-2000 |
| O'Brien, Conor |
Canada |
| |
25-09-1992 |
| O'Brien, David |
Australia |
| |
00-00-0000 |
| O'Brien, David |
Great Britain |
| |
00-00-0000 |
| O'Brien, Dervila |
Great Britain |
| |
00-00-0000 |
| O'Brien, Dick |
Ireland |
| |
04-09-1975 |
| O'Brien, Dylan |
Ireland |
| |
19-12-1996 |
| O'Brien, E. |
Ireland |
| |
00-00-0000 |
| O'Brien, Glen |
Australia |
| |
00-00-0000 |
| O'Brien, Graham |
Ireland |
| |
15-10-1996 |
| O'Brien, Henry V. |
United States of America |
| |
05-04-1910 |
| O'Brien, Jack |
Great Britain |
| |
00-00-0000 |
| O'Brien, Joe |
Ireland |
| |
00-00-1935 |
| O'Brien, John |
Australia |
| |
00-00-0000 |
| O'Brien, Joseph |
Great Britain |
| |
25-07-2005 |
| O'Brien, Kate |
Canada |
| |
23-07-1988 |
| O'Brien, Kelland |
Australia |
| |
22-05-1998 |
| O'Brien, Killian |
Ireland |
| |
00-00-0000 |
| O'Brien, Lauren |
Great Britain |
| |
12-09-1996 |
| O'Brien, Liam |
Ireland |
| |
16-03-2005 |
| O'Brien, M. |
Great Britain |
| |
00-00-0000 |
| O'Brien, Mark |
Australia |
| |
16-09-1987 |
| O'Brien, Mark |
Great Britain |
| |
00-00-1965 |
| O'Brien, Maurice |
Ireland |
| |
23-12-1987 |
| O'Brien, Niall |
Ireland |
| |
00-00-0000 |
| O'Brien, Paddy |
Great Britain |
| |
00-00-0000 |
| O'Brien, Paidi |
Ireland |
| |
13-02-1984 |
| O'Brien, Scott |
Great Britain |
| |
00-00-1969 |
| O'Brien, Shaun |
Australia |
| |
31-05-1969 |
| O'Brien, Wally |
Australia |
| |
00-00-0000 |
| O'Callaghan, A. |
Ireland |
| |
00-00-0000 |
| O'Callaghan, Finbar |
Ireland |
| |
19-07-1987 |
| O'Callaghan, H.G. |
Australia |
| |
00-00-0000 |
| O'Callaghan, Jason |
Ireland |
| |
05-01-1979 |
| O'Callaghan, Mark |
Ireland |
| |
25-11-1996 |
| O'Callaghan, R. |
Australia |
| |
00-00-0000 |
| OCamb, Adam |
United States of America |
| |
00-00-0000 |
| O'Cionnfhaolaidh, Donal |
Ireland |
| |
22-09-1996 |
| O'Clay, Jonathan |
Great Britain |
| |
00-00-0000 |
| O'Clery, Patrick |
Great Britain |
| |
00-00-0000 |
| O'Coileain, R. |
Ireland |
| |
00-00-0000 |
| O'Collins, Diarmuid |
Ireland |
| |
00-00-0000 |
| O'Connel, Rachel |
Australia |
| |
31-12-1979 |
| O'Connell, Anton |
New Zealand |
| |
00-00-0000 |
| O'Connell, Brendan |
Australia |
| |
00-00-0000 |
| O'Connell, Denis |
Ireland |
| |
00-00-0000 |
| O'Connell, Edward |
Great Britain |
| |
00-00-0000 |
| O'Connell, Eoin |
Ireland |
| |
10-02-1987 |
| O'Connell, Pat |
Ireland |
| |
00-00-0000 |
| O'Connell, Pat Joe |
Ireland |
| |
00-00-0000 |
| O'Connell, Paul |
Ireland |
| |
06-11-1979 |
| O'Connell, Shane |
Ireland |
| |
00-00-0000 |
| O'Conner, David |
Australia |
| |
00-00-0000 |
