MK O'Brien

Mary Kate O'Brien (born August 22, 2002) is an American professional ice hockey forward for PWHL Detroit of the Professional Women's Hockey League (PWHL). She played college ice hockey at Minnesota Duluth.

Playing career College O'Brien began her college ice hockey career for Minnesota Duluth during the 2021–22 season. She was injured after three games, and granted a redshirt season. During the 2022–23 season, in her red-shirt freshman year, she recorded five goals and two assists in 39 games. During the 2023–24 season, in her red-shirt sophomore year, she recorded seven goals and seven assists in 39 games. During the 2024–25 season, in her red-shirt junior year, she served as alternate captain and recorded seven goals and 18 assists in 39 games. During the 2025–26 season, in her red-shirt senior year, she served as team captain and recorded three goals and 14 assists in 38 games.

Professional On June 17, 2026, O'Brien was drafted in the third round, 34th overall, by PWHL Detroit in the 2026 PWHL Draft.

Career statistics Regular seasonPlayoffs Season Team League GP G A Pts PIM GP G A Pts PIM 2021–22 University of Minnesota Duluth WCHA 7 0 1 1 2 — — — — — 2022–23 University of Minnesota Duluth WCHA 39 5 2 7 4 — — — — — 2023–24 University of Minnesota Duluth WCHA 39 7 7 14 13 — — — — — 2024–25 University of Minnesota Duluth WCHA 39 7 19 26 18 — — — — — 2025–26 University of Minnesota Duluth WCHA 38 3 14 17 10 — — — — —NCAA totals 162 22 43 65 47 — — — — —