Jacob Gagan (born 25 March 1993) is an Australian professional rugby league footballer currently playing for the Norths Devils in the Queensland Cup.

He previously played for the Cronulla-Sutherland Sharks, Newcastle Knights and the South Sydney Rabbitohs in the National Rugby League and for FC Lezignan in the Elite One Championship.

Born in Westmead, New South Wales, Gagan played his junior rugby league for the Cabramatta Two Blues, before being signed by the Parramatta Eels.

[12][13] In November, after missing out on NRL selection for Cronulla-Sutherland throughout the entire 2015 and 2016 seasons, Gagan signed a one-year contract with the Newcastle Knights starting in 2017.

[19] Gagan made his debut for South Sydney in round 3 of the 2019 NRL season against Manly-Warringah after being called into the side as a replacement for the injured Greg Inglis.