Dean Matterson (born 20 November 1997) is an Australian professional rugby league footballer who plays a second-row forward for the Manly-Warringah Sea Eagles in the NRL.

He is the younger brother of Parramatta Eels Lock forward Ryan Matterson.

Halfway through the 2018 season, Matterson moved to the Blacktown Workers.

In round 20 of the 2023 NRL season, Matterson made his first grade debut for Manly against the North Queensland Cowboys in a 19-8 loss at Brookvale Oval, scoring a try.

Matterson played seven games in his debut season.