| Birth Date: | 29 January 1894 |
| Birth Place: | Stockholm, Sweden |
| Death Date: | 6 April 1974 (aged 80) |
| Death Place: | Enskede, Sweden |
| Sport: | Diving |
| Club: | Stockholms KK |
| Show-Medals: | yes |
Dagmar Calla Johanna Nilsson (later Törnblom, 29 January 1894 – 6 April 1974) was a Swedish diver.[1] She competed in the 1912 Summer Olympics, but was eliminated in the first round of the 10 m platform event.