| Alejandro Hannig | |
| Birth Name: | Alex Hannig |
| Sport: | Sprinting |
| Event: | 200 metres |
| Birth Date: | 21 October 1897 |
| Birth Place: | Concepción, Chile |
| Death Place: | Santiago, Chile |
Alejandro Hannig (21 October 1897 - 17 February 1987) was a Chilean sprinter. He competed in the men's 200 metres at the 1928 Summer Olympics.[1]