| Age | 48 |
| Birthday | 1976 |
| Birthplace | Donaghmore, Dungannon, United Kingdom |
| Eye Color | Blue |
| Hair Color | Black |
| Nationality | Northern Irish |
| Occupation | Actor |
| Claim to Fame | Snatch (2000) |
Liam McMahon (born 1976) is an Northern Irish actor. His work includes roles in Hunger, The Secret (2016) and Without You (2011).
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