Black Flag is an abandoned town in Western Australia, 30 km north west of Kalgoorlie.

It is on the Black Flag to Ora Banda Road in the Goldfields-Esperance region of Western Australia.

The town derives its name from the Black Flag gold find that was discovered in 1893 when a prospector, R.H Henning, pegged the lease.

[3] The name of the town is thought to originate from a flag that had been hung up to indicate that a store was open for business.

[4] However, Norman Sligo, in his book Mates and Gold,[5] suggests that the name was because of the "hills and flats being coated with black ironstone wash".