James Ratti (born 14 October 1997) is a Welsh rugby union player who plays for Cardiff Blues as a lock.
Ratti made his debut for the Ospreys in 2018 against Zebre having previously played for the Ospreys academy and Aberavon RFC.
Ratti was released from the Ospreys following the 2018-2019 Pro14 season.
He was subsequently picked up by Cardiff RFC on a professional contract allowing him to train full time with the Cardiff Blues.