Cornelis Marinus "Kees" Kievit (5 June 1931 – 29 July 2020) was a Dutch swimmer who won a silver medal in the 100 m backstroke event at the 1950 European Aquatics Championships. He also participated in the 1948 Summer Olympics but did not reach the finals. Between 1948 and 1951 he was 4 times national champion and set 12 national records in the 100 m and 200 m backstroke events.