The Ajax Stakes is an Australian Turf Club Group 2 Thoroughbred quality handicap horse race, for horses aged three years old and upwards, over a distance of 1500 metres, held annually at Rosehill Racecourse in Sydney, Australia in March.

[1] Total prize money for the race is A$300,000.

The race is named for the outstanding Hall of Fame horse and 1938 Cox Plate winner Ajax.

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