Aidan Joseph "AJ" Roach (born 7 September 1990 in Darlinghurst) is an Australian male water polo player.

[4] Roach was picked in the water polo Sharks squad to compete in the men's water polo tournament at the 2020 Summer Olympics.

[5] The team finished joint fourth on points in their pool but their inferior goal average meant they finished fifth overall and out of medal contention.

[7] He is the son of former professional rugby league footballer Steve Roach.

This biographical article relating to an Australian water polo figure is a stub.