The 1910 NSWRFL season was the third season of the New South Wales Rugby Football League premiership, Sydney’s top-level rugby league club competition, Australia’s first. Eight teams from across the city contested during the season for the premiership and the Royal Agricultural Society Challenge Shield. During the season, many of the league’s top players took part in matches of the 1910 Great Britain Lions tour of Australia.

The 1910 Great Britain Lions tour of Australia and New Zealand was the first international tour of the Great Britain national rugby league team, "The Lions". They played the second ever Ashes series against Australia, and their first as the visiting team, before travelling to Auckland to take on New Zealand. The tour was a huge promotional and financial success for what was then known as the "Northern Union" game and helped set the pattern for regular, alternating test match series between Britain and Australia. It is regarded as one of the most important events in the history of rugby league.