Vain was a champion Thoroughbred racehorse that dominated Australian sprint racing in the period 1968–70, when he won 12 of the 14 races he contested and ran second in the other two. He went on to become a leading sire in Australia.

The Sires' Produce Stakes is a Victoria Racing Club Group 2 Thoroughbred horse race for two-year-olds, run at set weights, over a distance of 1400 metres, at Flemington Racecourse, Melbourne, Australia in March during the VRC Autumn Racing Carnival. The total prize money is A$300,000.