Bryan Mahon
| Sir Bryan Mahon | |
|---|---|
| Born | 2 April 1862 County Galway, Ireland | 
| Died | 29 September 1930 (aged 68) Dublin, Ireland | 
| Allegiance | United Kingdom | 
| Branch | British Army | 
| Years of service | 1883–1921 | 
| Rank | General | 
| Unit | 8th (King's Royal Irish) Hussars | 
| Commands | |
| Battles / wars | Mahdist War | 
| Awards | 
 | 
| Senator | |
| In office 11 December 1922 – 29 September 1930 | |
| Personal details | |
| Political party | Independent | 
| Spouse | Amelia Milbanke (m. 1920) | 
Sir Bryan Thomas Mahon, KCB, KCMG, DSO, KCVO, PC (Ire) (2 April 1862 – 29 September 1930) was an Irish general of the British Army, a senator of the short-lived Senate of Southern Ireland, and a member for eight years of the Irish Free State Senate until his death.