Calvin Wellington (born 10 December 1995) is a Welsh professional rugby league footballer who plays as a for Rochdale Hornets in League 1.
Wellington previously played rugby league for St Helens in the Super League.
In July 2017, Wellington joined the Sheffield Eagles on loan until the end of the 2017 season. The Sheffield Eagles were at the time beginning their end-of-season campaign to win the Championship Shield. He joined along with two St. Helens' teammates; Liam Cooper and Jonah Cunningham.
On 1 November 2021 it was reported that he had signed for Oldham RLFC in the RFL League 1.
On 12 July 2023 it was reported that he had signed for Rochdale.
In November 2017 he joined the Welsh rugby union team the Dragons as a wing or centre in the Pro14 league.