| Elsa Bonsdorff | |
| Office1: | Member of the Finnish Parliament for Uusimaa |
| Term Start1: | 1 September 1936 |
| Term End1: | 5 April 1945 |
| Parliamentarygroup1: | Swedish People's Party |
| Birth Name: | Elsa Rosina Bonsdorff |
| Birth Date: | 10 November 1883 |
| Birth Place: | Turku |
| Death Place: | Helsinki |
| Nationality: | Finnish |
| Party: | Swedish People's Party |
Elsa Rosina Bonsdorff; 10 November 1883, Turku – 4 August 1973, Helsinki) was a Finnish politician who served as a member of the Parliament of Finland for the Uusimaa constituency from 1936 to 1945, representing the Swedish People's Party of Finland (SFP).[1]