Jonathan Lomax (born 4 September 1990) is an English professional rugby league footballer who plays for St Helens in the Super League. A versatile player, Lomax is primarily a fullback but is equally comfortable at scrum-half, and featured more regularly on the wing in the early stages of his professional career.
Lomax made his first-team début for St. Helens in 2009's Super League XIV game against Wakefield Trinity in 2009, where he helped them to an easy 42-18 win.
Lomax was selected in England's 24-man squad for the 2016 Four Nations. He made his international début in a test match against France.