Allen McDonough (1804–1888) was an Irish jockey who won the Grand National in 1838 on Sir William.
| Allen McDonough | |
|---|---|
| Born | 1804 Wellmont, County Galway, Ireland |
| Died | 12 May 1888 Dublin |
| Major racing wins | |
| Grand National 1838 Dunchurch Chase, 1841 Warwick Chase, 1841 Worcester Grand Annual, 1842, 1846 | |
| Significant horses | |
| Sir William The Nun Cigar Roderick Random Brunette | |
He died in Dublin on 12 May 1888 aged 84.