The Queen Elizabeth Stakes, formerly known as the Queen's Plate, AJC Plate, and AJC King's Cup, is an Australian Turf Club Group 1 Weight for Age thoroughbred horse race run over a distance of 2,000 metres at Randwick Racecourse, Sydney, Australia, in the autumn during the ATC Championships series. Prize money in 2013 was A$500,000 and was increased to A$4,000,000 in 2014 to become the richest race of the Sydney Autumn Carnival and as of 2020 the third richest WFA race in Australia.

Australian Turf Club (ATC) owns and operates thoroughbred racing, events and hospitality venues across Sydney, Australia. The ATC came into being on 7 February 2011 when the Australian Jockey Club (AJC) and the Sydney Turf Club (STC) merged. The ATC primarily operates out of their offices at Randwick Racecourse and employs approximately 270 full-time staff and over 1,000 casual staff across the five venues. The venues include Randwick, Rosehill Gardens, Canterbury Park, Warwick Farm and the Rosehill Bowling Club.