| Office: | Teachta Dála |
| Term Start: | February 1948 |
| Term End: | May 1954 |
| Term Start1: | June 1927 |
| Term End1: | July 1937 |
| Constituency1: | Meath |
| Term Start2: | July 1937 |
| Term End2: | February 1948 |
| Constituency2: | Meath–Westmeath |
| Party: | Fianna Fáil |
| Birth Date: | 1 March 1880 |
| Birth Place: | County Meath, Ireland |
| Death Place: | County Meath, Ireland |
| Education: | Castleknock College |
Matthew O'Reilly (1 March 1880 – 13 November 1962) was an Irish politician. A farmer, he was first elected to Dáil Éireann as a Fianna Fáil Teachta Dála (TD) for the Meath constituency at the June 1927 general election.[1] He was re-elected at each subsequent general election until lost his seat at the 1954 general election.[2] From 1937 to 1948, he was elected for the Meath–Westmeath constituency.[2]
He was educated at Castleknock College.