Jonathan Walker (born 20 February 1991) is a Scotland international rugby league footballer who plays as a prop.
He has previously played for the Castleford Tigers, Hull Kingston Rovers, Bradford Bulls, Leigh Centurions and the Darlington Point Roosters.
He made his début for Castleford against Wigan Warriors in round 16 of 2010's Super League XV, coming off the interchange bench for his first game.
Walker signed a two-year deal with the Bradford Bulls following the 2015 season.
Jonathan is the twin brother of the late rugby league player Adam Walker.