David Allen (born 15 September 1985) is a former rugby league footballer who played as a second-row forward.

An Ireland international, Allen played for the Wigan Warriors, Oldham, Barrow Raiders, Widnes Vikings, Whitehaven and the Rochdale Hornets.

He played in the 2006 National League One Grand Final where Widnes lost 16–29 to Hull Kingston Rovers.

At the end of 2006 his contract with Widnes was not renewed after he failed a drug test following the Grand Final game against the Hull KR.

In 2016, he was called up to the Ireland squad for the 2017 Rugby League World Cup European Pool B qualifiers.