Alex Walmsley (born 10 April 1990) is an English professional rugby league footballer who plays as a prop for St Helens in the Super League, and England and Great Britain at international level.

He previously played for the Batley Bulldogs in the Championship and has spent time on loan from Saints at his former club in the second tier.

Walmsley was born in Dewsbury, West Yorkshire, England.

Walmsley started his career in the amateur leagues, playing for Dewsbury Celtic, and his university team, Leeds Met Carnegie. In 2011, he received the National Conference League player of the year award.

In February 2012, Walmsley signed for Batley following a spell on trial at the club. He won Batley's player of the year award and the Championship Young Player of the Year during his only season with the club, before signing with St Helens for the start of the 2013 season.

Walmsley briefly returned to Batley at the start of 2013 on a dual registration before establishing himself in the St Helens first team that season.

St Helens reached the 2014 Super League Grand Final, and Walmsley was selected to play from the interchange bench in their 14–6 victory over the Wigan Warriors at Old Trafford.

Walmsley's form in 2015 saw him named to the Super League Dream Team for the first time as well as earning him a nomination for the Man of Steel award.