| Office: | Senator |
| Term Start: | 22 July 1954 |
| Term End: | 5 November 1969 |
| Term Start2: | 16 June 1950 |
| Term End2: | 14 August 1951 |
| Constituency2: | Industrial and Commercial Panel |
| Nationality: | Irish |
| Birth Date: | 1902 |
Mary Frances Davidson (1902 – 29 May 1986) was an Irish Labour Party politician. She was elected to Seanad Éireann on the Industrial and Commercial Panel at a by-election on 16 June 1950.[1] She lost her seat at the 1951 Seanad election but was re-elected at the 1954 Seanad election and was re-elected at each subsequent election until she retired at the 1969 Seanad election.
She was appointed Labour Party General Secretary on the 28 June 1962.[2] She was the first female General Secretary of any Irish political party.