Electoral district of Semaphore
| Semaphore South Australia—House of Assembly  | |
|---|---|
| State | South Australia | 
| Created | 1938 | 
| Abolished | 1993 | 
| Namesake | Semaphore, South Australia | 
| Demographic | Metropolitan | 
Semaphore was an electoral district of the House of Assembly in the Australian state of South Australia from 1938 to 1993.
Semaphore was abolished in a boundary redistribution in 1993 and became the new seat of Hart.
The suburb of Semaphore is currently located in the marginal Labor seat of Lee.