Louis Rees-Zammit is a Welsh professional American football running back and return specialist for the Jacksonville Jaguars of the National Football League (NFL), and a former rugby union player. He played as a winger for Gloucester in the English Premiership, and played for Wales at an international level, scoring 14 tries in 32 caps. Rees-Zammit won the 2021 Six Nations Championship with Wales, and he was subsequently named in the squad for the 2021 British & Irish Lions tour to South Africa. During 2024, Rees-Zammit quit rugby union and moved to the USA to pursue a career in the NFL.