| Cor Aalten | |
| Fullname: | Cornelia Aalten |
| Birth Date: | 14 September 1913 |
| Birth Place: | Breukelen-Nijenrode, the Netherlands |
| Death Date: | 21 January 1991 (aged 77) |
| Death Place: | Zeist, the Netherlands |
| Sport: | Sprint running |
| Club: | TOV, Zeist |
| Olympics: | 1932 |
| Show-Medals: | yes |
Cornelia "Cor" Aalten (later Strannood, 14 September 1913 – 21 January 1991) was a Dutch athlete. She competed at the 1932 Olympics in the 100 m and 4 × 100 m sprint events and finished fourth in the relay.
In 1934 she won a national title in the pentathlon and a silver medal at the 1934 Women's World Games in the 4 × 100 m relay (with Cor Aalten, Jo Dalmolen, Agaath Doorgeest and Iet Martin).
Aalten worked as stenographer with the company Gerritsen en van Kempen in Zeist.