| Office: | Senator |
| Term Start: | 11 December 1922 |
| Term End: | 29 May 1936 |
| Party: | Labour Party |
| Birth Place: | County Meath, Ireland |
| Death Date: | 1957 |
| Nationality: | Irish |
Michael Duffy (died 1957) was an Irish Labour Party politician and trade union official from Dunshaughlin, County Meath.[1] [2]
He was a member of Seanad Éireann from 1922 to 1936. He was a member of the Irish Transport and General Workers' Union and served as the president of the Irish Trades Union Congress in 1934.[3] He was elected to the Free State Seanad for 9 years at the 1922 election, and was re-elected for another 9 years at the 1931 election.[1] He served until the Free State Seanad was abolished in 1936. He died in 1957.[4]