Powerhead may refer to:
Powerhead (firearm), a direct-contact, underwater firearm Powerhead (aquarium), a submersible aquarium pump Powerhead (rocket engine), the preburners and turbopumps of a pump-fed rocket engine (excludes the engine combustion chamber and nozzle) Powerhead (pump), the mechanical drive of any one of several non-aquarium pump types; marine propeller powerhead, fountain powerhead, etc.