OLEANDER c. 1924
PRUNUS (---) - ORCHIDEE II (---), by

OLIBRIA (BRZ) f. 1980
BARONIUS (BRZ) - SALLUCA (IRE), by SALLUST (IRE)

OLIFA (GB) f. 1930
BUCHAN (GB) - ORISON (GB), by FRIAR MARCUS (GB)

OLIVE () f. 0000
- , by

OLIVENZA f. 1918
LOUVOIS (GB) - OLVIDADA (GB), by DINNA FORGET (IRE)

OLIVER GOLDSMITH (GB) c. 1908
- , by

OLLILA (BRZ) f. 1988
DEREK (BRZ) - ANNETTE (BRZ), by PASS THE WORD (USA)

OLMEC (USA) f. 1966
PAGO PAGO (AUS) - CHOCOLATE BEAU (USA), by BEAU MAX (USA)

OLMIRA (BRZ) f. 1988
BARONIUS (BRZ) - TOUJOURS BELLE (ARG), by ATLAS (ARG)

OLTENIE f. 1989
BOUNDING BASQUE (BRZ) - KRISTINA (BRZ), by L'EMIGRANT (USA)