| Intro | Olympic swimmer |
| Was |
Athlete Swimmer |
| From | Netherlands |
| Type | Sports |
| Gender | female |
| Birth | 10 April 1919, Rotterdam |
| Death |
21 August 1958, Melbourne (aged 39 years) |
Anna Petronella “Ans or Annie” Timmermans (10 April 1919 – 21 August 1958) was a Dutch swimmer who won a gold medal in the 4 × 100 m freestyle relay at the 1934 European Championships. Two years later she competed in the 400 m freestyle at the 1936 Olympics, but failed to reach the final.