Semaphore may be:
Semaphore line, a system of long-distance communication based on towers with moving arms
Railway semaphore signalfor railroad traffic control
Semaphore (band), London based music trio
* Traffic semaphore, another name for automotive traffic lights based on their early resemblance to railway semaphores
* Turning semaphore, retractable semaphores on automobiles from the 1920s to 1950s
Semaphore (programming), in computer science, a mechanism for supporting mutual exclusion in concurrent programs
Semaphore, South Australia, a historic seaside community in southern Australia
Semaphore railway line, Adelaide, a closed railway line in Adelaide South Australia
Semaphore (album), a 1998 album by the band Fridge
* Semaphore, fictional professor in "
Cubitus" comic strips or "Wowser" cartoons
International maritime signal flags
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