| Harry Aylwin | |
| Fullname: | Harold Sidney Aylwin |
| Birth Date: | 16 December 1870 |
| Birth Place: | Redhill, Surrey |
| Death Place: | Mosman, New South Wales |
| Originalteam: | South St Kilda |
| Statsend: | 1899 |
| Years1: | 1897–99 |
| Games Goals1: | 29 (0) |
Harold Sidney Aylwin (16 December 1870 – 1 June 1949) was an Australian rules footballer who played with St Kilda in the Victorian Football League (VFL).[1]
He later had a successful business career as head of the Australian business for J. & N. Philips.