| Birth Date: | 1947 7, df=y |
| Birth Place: | Amsterdam, Netherlands |
| Death Place: | Amsterdam, Netherlands |
| Height: | 1.93m (06.33feet) |
| Weight: | 86kg (190lb) |
| Sport: | Swimming |
| Club: | Het Y, Amsterdam |
| Show-Medals: | yes |
Marinus Cornelis "Rinus" van Beek (18 July 1947 – 7 March 2018) was a Dutch swimmer. He competed at the 1968 Summer Olympics in the 200 m backstroke event, but failed to reach the final. After his career he became an architect.[1]