The Australian Champion Racehorse of the Year is awarded to the Thoroughbred horse who is voted to be the champion horse within an Australian racing season.
This award is open to all racehorses racing within Australia, regardless of age and sex, and includes overseas performances.
A separate award was voted on between 1976/77 and 1993/4 by the Australian Racing Writers' Association with the only variations being Gurner's Lane (1982/3) and Bonecrusher (1986/7).
Winx has won the award four times.
Black Caviar and Sunline won it three times.