Kateřina Mrázová (born July 9, 1972 in Brno) is a Czech retired competitive ice dancer. With partner Martin Šimeček, she is a multiple Czech national champion. They placed 10th at the 1992 Winter Olympics (at which they competed for Czechoslovakia), 8th at the 1994 Winter Olympics, and 13th at the 1998 Winter Olympics. They retired from competitive skating following the 1998 World Figure Skating Championships.