| Alie Stijl | |
| Club: | Amsterdamsche Dames Zwemclub HZ Zian De Meeuwen |
| Birth Date: | 29 January 1923 |
| Birth Place: | Amsterdam, the Netherlands |
| Death Place: | Emmeloord, the Netherlands |
| Show-Medals: | yes |
Aaltje "Alie" Stijl (29 January 1923 – 20 May 1999) was a Dutch swimmer who won a silver medal in the 4 × 100 m freestyle relay at the 1938 European Aquatics Championships. Less than two years later, on 12 January 1940, she set a world record in the 100 yd breaststroke. She had no chance to compete at the Olympics, which were cancelled in 1940 and 1944. In 1941 she became engaged to a German soldier and moved to Germany, where she continued competing during the war. Around 1944 she returned to the Netherlands, and between 1948 and 1988 was married to Johan Kistemaker.