Matilda Maria Castrén (born 18 January 1995) is a Finnish professional golfer playing on the LPGA Tour.

[5] Castrén played college golf at Florida State University beginning in 2014 and graduated in May 2017 with a degree in International Affairs, after winning seven individual titles in collegiate competition during her time with the Florida State Seminoles women's golf team, a school record.

She was named second-Team All-American by the Women's Golf Coaches Association and Golfweek in 2014 and was a three-time All-ACC selection (2014, 2016 and 2017) as one of only three players in school history.

[7] In only six starts she earned enough to qualify via the money list for her first major, the 2020 Women's PGA Championship, where she was T9 after a first round of 69 and finished the tournament T23.

She needed to secure a victory on the LET to become a member of the tour and be eligible for the 2021 European Solheim Cup Team.