Kateřina Mrázová (born 19 October 1992) is a Czech ice hockey forward and member of the Czech national team, currently playing in the Premier Hockey Federation (PHF) with the Connecticut Whale. Known for her stickhandling skill, she was the first European player to win the Clarkson Cup, winning the championship with the Boston Blades in 2013, and the first Czech player to score a goal in the National Women's Hockey League (NWHL; renamed PHF in 2021).