Karoliina Rantamäki (born 23 February 1978 in Espoo) is a Finnish female ice hockey player. She played on the women's ice hockey team for Finland at the 1998 Winter Olympics, and won a bronze medal. Karoliina Rantamäki scored at 2:49 overtime to give Finland the bronze medal at the 2011 IIHF Women's World Championship.