Jan Weeteling (born 18 August 1940) is a retired Dutch swimmer who won a bronze medal in the 4×100 m medley relay at the 1962 European Aquatics Championships. He also competed in the 200 m backstroke and 4×100 m medley relay at the 1964 Summer Olympics but was eliminated in the preliminaries. He won the silver medal in the 200 m backstroke at the 1963 Summer Universiade.Bep is the elder brother of the former swimmer Bep Weeteling who also participated in the 1964 Olympics.