Matilda Castren (born 18 January 1995) is a Finnish professional golfer playing on the LPGA Tour. She won the 2021 LPGA Mediheal Championship to become the first player from Finland to win on the LPGA Tour.
Castren played two seasons on the Symetra Tour in 2018 and 2019, before she finished T26 at the LPGA Final Qualifying Tournament to earn her card for the 2020 LPGA Tour. In only six starts she earned enough to qualify via the money list for her first major, the 2020 Women's PGA Championship.