| Juha Siira | |
| Nationality: | Finnish |
| Sport: | Sailing |
| Birth Date: | 10 January 1946 |
| Birth Place: | Helsinki, Finland |
| Death Place: | Tuusula, Finland |
Juha Siira (10 January 1946 – 17 June 2021)[1] was a Finnish sailor. He competed at the 1976 Summer Olympics and the 1980 Summer Olympics.[2]