| Henry William Allan | |
| Birth Date: | 2 April 1850 |
| Birth Place: | Glasgow, Scotland |
| Death Place: | Beith, Scotland |
| Ru Position: | Forward |
| Amatyears1: | - |
| Ru Provinceyears1: | - |
| Repteam1: | Scotland |
| Repyears1: | 1873 |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
Henry William Allan (2 April 1850 – 12 December 1926) was a Scottish rugby union international who represented Scotland in the 1873–74 Home Nations rugby union matches.[1]
He played as a forward for Glasgow Academicals.[2]
He represented Glasgow District against Edinburgh District in the world's first provincial match, the 'inter-city', on 23 November 1872.[3]
He also represented Glasgow District against Edinburgh District in the 5 December 1874 match.[4]