| Thomas Joseph Mahony | |
| Parliament: | Ontario Provincial |
| Term Start: | June 25, 1923 |
| Term End: | April 3, 1934 |
| Predecessor: | Wilson Crockett |
| Successor: | constituency abolished |
| Riding: | Wentworth South |
| Party: | Conservative |
Thomas Joseph Mahony was a Canadian politician from the Conservative Party of Ontario. He represented Wentworth South in the Legislative Assembly of Ontario from 1923 to 1934.[1]