Jacob Liddle (born 27 October 1996) is an Australian professional rugby league footballer who currently plays for the Wests Tigers in the National Rugby League. He plays at hooker.
Born in Gosford, New South Wales, Liddle played his junior rugby league for the Wyong Roos, before being signed by the Wests Tigers. He studied at Wadalba Community School.
In November and December 2014, Liddle played for the Australian Schoolboys. In 2015 and 2016, he played for the Wests Tigers' NYC team, and he was named the team's Player's Player in 2015. He played for the New South Wales under-20s team against the Queensland under-20s team in 2015, and was selected again in 2016, but forewent the match to make his first-grade debut.
On 14 June, Liddle re-signed with the Tigers on a 2-year contract until the end of 2018. With Robbie Farah absent for State of Origin, and Manaia Cherrington and Matt Ballin injured, Wests Tigers were given a dispensation for Liddle to make his debut in round 18 against the Canterbury-Bankstown Bulldogs, despite exceeding the 2nd tier salary cap. Coming off the bench, he scored a try early in the 2nd half. Coach Jason Taylor said, "For salary cap reasons he probably won't play any more part. That's disappointing. He didn't look out of place for a second against a team with those big guys and his defence was superb."