The Sydney Derby is a local derby contested between two of the Australian A-League Men's Sydney-based clubs, Sydney FC and Western Sydney Wanderers. Contested for the first time on 20 October 2012, historical, cultural and sporting factors have resulted in the derby being considered one of Australian sport's biggest club games, and one of the biggest rivalries in the A-League Men. Crowd sentiment at derby matches has been said by Alessandro Del Piero to produce atmosphere and emotions similar to those in Europe, while Wanderers player Mateo Poljak stated that the sixth Sydney Derby had an atmosphere that was the best he had experienced as a player.

A-League Men is the highest-level professional men's soccer league in Australia and New Zealand. At the top of the Australian league system, it is the country's premier men's competition for the sport. A-League Men was established in 2004 as the A-League by the Football Federation Australia (FFA) as a successor to the National Soccer League (NSL) and competition commenced in August 2005. The league is currently administered by the Australian Professional Leagues (APL), contested by twelve teams; eleven based in Australia and one based in New Zealand. The men's, women's and youth leagues have now been brought together under a unified A-Leagues banner.