Jack William Walker (born 8 August 1999) is an English professional rugby league footballer who plays as a fullback for Sheffield Eagles in the RFL Championship and the England Knights at international level.

Walker made his début for Leeds in the Challenge Cup against Doncaster where he scored a hat trick.

He then went on to become Leeds' first choice fullback and played in the Rhinos' 2017 Super League Grand Final victory over the Castleford Tigers 24-6 at Old Trafford.

[8] On 17 Jan 2025 it was reported that he had signed for Sheffield Eagles in the RFL Championship[9] In 2018, Walker was selected to play for England Knights on their tour of Papua New Guinea.

He played against Papua New Guinea at the Oil Search National Football Stadium.