| Office1: | Senator |
| Term Start1: | 8 September 1943 |
| Term End1: | 18 August 1944 |
| Constituency1: | Industrial and Commercial Panel |
| Nationality: | Irish |
| Party: | Independent |
John Aloysius Maguire was an Irish politician. He was an independent member of Seanad Éireann from 1943 to 1944. He was elected to the 4th Seanad in 1943 on the Industrial and Commercial Panel.[1] He lost his seat at the 1944 Seanad election.[1]