Heidemarie "Heidi" Reineck (born 15 February 1952) is a German former swimmer who won three bronze medals in relay events at the 1968 and 1972 Summer Olympics. Individually she finished fifth in the 100 m freestyle in 1972. She also won bronze medals in relay events at the 1970 European Aquatics Championships and 1973 World Aquatics Championships.
Nationally, she won seven titles in the 100 m (1968âÂÂ1971), 200 m (1968, 1970) and 400 m (1968) freestyle events.