Darby Medlyn (born 7 November 1999) is a professional rugby league footballer who plays as a lock for the Canberra Raiders in the NRL.

He is in a relationship with Nicky Davies.

Medlyn made his first grade debut in round 20 of the 2020 NRL season for Canberra against the Cronulla-Sutherland Sharks at Kogarah Oval.

[2][3] Medlyn made no appearances for Canberra in the 2021 NRL season.

He was later released by the club.