Casey O'Brien

Casey O'Brien
O'Brien playing with the New York Sirens in January 2026
Born (2001-08-27) August 27, 2001
Height 5 ft 4 in (163 cm)
Weight 135 lb (61 kg; 9 st 9 lb)
Position Forward
Shoots Left
PWHL team New York Sirens
National team  United States
Playing career 2020–present

Casey O'Brien (born August 27, 2001) is an American professional ice hockey forward for the New York Sirens of the Professional Women's Hockey League (PWHL) and the United States national team. She played five seasons of college ice hockey at Wisconsin where she won three NCAA national championships (2021, 2023, 2025) and the Patty Kazmaier Award in 2025 as the top player in NCAA Division I women's ice hockey. She finished her career as Wisconsin's all-time leader in points (274) and assists (177), with her 274 points ranking eighth in NCAA history. She was named WCHA Player of the Year and Forward of the Year in 2025.