| Billy Arnott | |
| Fullname: | William Henry Arnott |
| Birth Date: | 7 April 1873 |
| Birth Place: | Harcourt, Victoria |
| Death Place: | Brisbane, Queensland |
| Originalteam: | Collingwood (VFA) |
| Statsend: | 1897 |
| Years1: | 1893 |
| Club1: | (VFA) |
| Games Goals1: | 2 (0) |
| Years2: | 1895–6 |
| Club2: | (VFA) |
| Games Goals2: | 36 (2) |
| Years3: | 1897 |
| Games Goals3: | 1 (0) |
William Henry Arnott (7 April 1873 – 18 May 1962)[1] was a former Australian rules footballer who played with Carlton in the Victorian Football League (VFL).