| Namn | Licens | Födelseår | Far | Mor | Morfar |
|---|---|---|---|---|---|
| Osman | 42249 | 1979 | |||
| Osmanthus CN | 242932 | 1996 | Rubinstein | Fleur | Nurprimus |
| Osmin | 9449 | 1978 | Kardell | Ouchy | Utrillo |
| Osofin | 16799 | 1968 | Dawson | Pyret | Ravello |
| Osofin | 214066 | 1997 | Cortez | Solinette (23) | Warrigall |
| Osofin | 996865 | 1993 | Hagens Lance RC | Cait II | Värnbergs Neptunus RC |
| Osofina | 900779 | 1975 | Gondoljär | Nehru | |
| Osram | 987804 | 1994 | Beach Boy | Olivia | Indus |
| Osselet de Blondel | 237443 | 2002 | Desir de Chateau | Phedra Rateliere | Belpheger IV |
| Ossi | 200111 | 1996 | Opius | Lissi (42) | Pascal |
| Ossian | 17230 | 1986 | Orust | Bianka | Bonaparte |
| Ossian | 225346 | 2000 | Cagliostro | Sweet Bird xx | Streak xx |
| Ossian | 985998 | 1992 | Balans RWR | Manda | |
| Ossian Anubis | 218837 | 1985 | |||
| Ossory Hill Star | 200683 | 1991 | |||
| Ostara | 213257 | 1996 | Golden Grannus | Crista | Wagner |
| Ostara | 257983 | 1998 | |||
| Osten | 4300 | 1981 | Saturn | Ograna | Nikifon PO |
| Osterblume IV | 256540 | 1998 | Lamarc | Ouvertuere III | Alarm |
| Osterblüme | 245144 | 1998 | Lamarc | Hauptstutbuch Ouvetuere III | Alarm III |
| Osterglanz xx | 1970 | Neckar xx | Osterblume xx | Polic xx | |
| Osterman | 969643 | 1990 | Osterglanz | Manie | Furioso III |
| Ostro Nova | 251010 | 2004 | Cagliostro | Coqette (SWB) | Koncerz xx |
| Osvald | 900545 | 1978 | Ciceron | Lami | Nepal |
| Osvald | 987726 | 1991 | Urbino | Madame Chanel | Democritos |
| Oswald | 218471 | 1996 | Faldo | Gerrylady | Joost |
| Oswego | 38329 | 1979 | Karlsdal | Kickan | Urbino |
| OSåFin | 1973 | Filipin | Ouverina | Ouvertyr | |
| Otard | 218788 | 1995 | Legaat | Wenda | Lucky Boy xx |
| Otchiba | 217219 | 1996 | Fanhults Finish | Björntsorps Florence | Coed Coch Brown |