Klaus Grimmelt (born 11 April 1948) is a German former figure skater who represented West Germany.
He is the 1970 Nebelhorn Trophy champion and a two-time (1970–71) national champion.
He represented his country at three World and three European Championships, achieving his best placement, 13th, at Europeans in 1969 (Garmisch-Partenkirchen) and 1971 (Zurich).
Grimmelt was a member of Düsseldorfer Eislaufgemeinschaft.