| Allen McDonough | |
| Birth Date: | 1804 |
| Birth Place: | Wellmont, County Galway, Ireland |
| Death Date: | 12 May 1888 |
| Death Place: | Dublin |
| Race: | Grand National 1838 Dunchurch Chase, 1841 Warwick Chase, 1841 Worcester Grand Annual, 1842, 1846 |
| Horses: | Sir William The Nun Cigar Roderick Random Brunette |
Allen McDonough (1804–1888) was an Irish jockey who won the Grand National in 1838 on Sir William.
He died in Dublin on 12 May 1888 aged 84.