Delta (1946–1960) was a champion Australian thoroughbred racehorse who raced from a two-year-old to a six year-old from distances of 6 furlongs to 2 miles. Champion jockey Neville Sellwood won 22 races including the 1949 VRC Derby, 1949 Cox Plate and the 1951 Melbourne Cup. Neville Sellwood was also the regular jockey of the champions Tulloch and Todman. Purchased by owner Adolph Basser for £2,665 at the 1948 Sydney yearling sales he was trained by former jockey and successful trainer Maurice McCarten. He died at Widden Stud in 1960.

The Victoria Derby, also known as the Penfolds Victoria Derby, is a Victoria Racing Club Group 1 Thoroughbred horse race for three-year-olds held under Set Weights conditions over a distance of 2,500 metres at Flemington Racecourse, in Melbourne, Australia scheduled annually on the first day of the Melbourne Cup Carnival. Total prize money for the race is A$2,000,000.