| Office: | Senator |
| Term Start: | 21 April 1948 |
| Term End: | 22 June 1953 |
| Term Start1: | 8 September 1943 |
| Term End1: | 18 August 1944 |
| Constituency1: | Labour Panel |
| Death Date: | 22 June 1953 |
Michael Colgan (died 22 June 1953) was an Irish independent politician and trade union official. He was a member of Seanad Éireann from 1943 to 1944 and from 1948 to 1953. He was first elected to the 4th Seanad in 1943 by the Labour Panel.[1]
He stood unsuccessfully for Dáil Éireann as an National Labour Party candidate for the Dublin North-East constituency at the 1944 general election,[2] and also lost his seat at the 1944 Seanad election. He was re-elected to the Seanad in 1948 and in 1951 again by the Labour Panel.[2] He died in office in June 1953.[1]
He was the president of the Irish Trades Union Congress in 1942, and president of the Congress of Irish Unions in 1950.