The Irish Champion Stakes is a Group 1 flat horse race in Ireland open to horses aged three years or older. It is run at Leopardstown over a distance of 1 mile and 2 furlongs, and it is scheduled to take place each year in September.

Assert was an Irish Thoroughbred racehorse and sire. As a two-year-old he was beaten by Golden Fleece on his debut but went on to win the Beresford Stakes. In the following year he won four Group One races: the French Derby, Irish Derby, Benson & Hedges Gold Cup and Joe McGrath Memorial Stakes. He was rated the best middle-distance horse in Europe in 1982 by Timeform. He was retired to stud at the end of his three-year-old season and became a successful sire of winners.