OSS Stallions

Recognized as one of the leading sire incentive programs in North America, the Ontario Sires Program provides excellent incentives for quality breeding to stallions standing in Ontario and their progeny.

For a complete yearly listing of Registered Ontario Thoroughbred stallions who took part in the Ontario Sire Program, please click on the links below. For listings after April 1, 2019 and forward visit www.ontarioracing.com.