| Birth Date: | 1946 6, df=y |
| Birth Place: | Wageningen, the Netherlands |
| Height: | 1.76m (05.77feet) |
| Weight: | 66kg (146lb) |
| Sport: | Swimming |
| Club: | De Rijn, Wageningen |
| Show-Medals: | yes |
Geertruida "Truus" Looijs (also Looys; born 27 June 1946) is a retired Dutch swimmer. She competed at the 1964 Summer Olympics in the 200 m breaststroke event, but failed to reach the final.