Cornelis Marinus "Kees" Kievit (born 5 June 1931) is a retired 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.