| Signe Johansson-Engdahl | |
| Fullname: | Signe Dagmar Charlotta Johansson-Engdahl |
| Nationality: | Swedish |
| Birth Date: | 27 May 1905 |
| Birth Place: | Stockholm, Sweden |
| Death Place: | Stockholm, Sweden |
| Sport: | Diving |
| Club: | Stockholms KK |
| Show-Medals: | yes |
Signe Dagmar Charlotta Johansson-Engdahl (27 May 1905 – 9 May 2010)[1] was a Swedish diver. She competed at the 1924 Summer Olympics in the 3 m springboard and placed fifth.[2] From the death of Erna Sondheim on 9 January 2008 until her own death, she was believed to be the oldest living person to have competed in the Olympic games.[3] [4] She was married to the Olympic runner Nils Engdahl, and her sister-in-law Märta Johansson was also an Olympic diver.[5]