Bas van Velthoven (born February 26, 1985 in Hazerswoude-Rijndijk) is a Dutch Swimmer who specializes in freestyle. He is currently training in Amsterdam together with Nick Driebergen, Femke Heemskerk and Chantal Groot with coach Martin Truijens. He held the European record in the 4×100 m freestyle short course together with Robert Lijesen, Mitja Zastrow and Robin van Aggele in 3:09.18. This record was set during the World SC Championships 2008 in Manchester where the Dutch team finished second behind the United States, who broke the world record in the same race. A few weeks before at the 2008 European Aquatics Championships in Eindhoven he won the bronze medal in the 4×100 m freestyle.