Joel Mattsson (born 17 March 1999) is a Finnish professional footballer who plays for Danish club Vejle BK, as a midfielder.
On 23 December 2018, HIFK announced the signing of Mattsson. In January 2020 Danish club Vejle Boldklub confirmed that Mattson would join the club on a one-and-a-half-year contract from January 2021. He moved on loan to IFK Mariehamn for the 2021 season.