Joseph William Ralls (born 13 October 1993) is an English professional footballer who plays as a midfielder for Championship club Cardiff City.
After playing at youth level for local teams Aldershot Town and Farnborough, Ralls joined the youth academy at Cardiff City after being spotted by scouts from the club.
He made his professional debut for the Bluebirds in August 2011 before joining Yeovil Town on a season-long loan deal for the 2013–14 season to gain experience.
On his return to Cardiff, Ralls established himself in the first-team and has made over 200 appearances for the club in all competitions.