Sir John McMahon | |
|---|---|
 1815 engraving by Charles Turner, after a painting by Sir Thomas Lawrence | |
| Private Secretary to the Prince Regent | |
| In office 1811–1817 | |
| Preceded by | Lt. Gen. Sir Herbert Taylor |
| Succeeded by | Lt. Gen. Sir Benjamin Bloomfield |
| Personal details | |
| Nationality | British |
Colonel Sir John McMahon, 1st Baronet (c. 1754 – 12 September 1817) was an Irish-born politician and Private Secretary to the Prince Regent 1811–1817.