A motor is a device that converts energy into mechanical power, and is often synonymous with engine.

Motor may refer to:

• Motor (Electric) - a machine which converts electricity into mechanical motion
• Motor (Engine) - a machine used to convert chemical fuel into mechanical power by controlled explosions
• Motor (Automobile) - The early 20th century abbreviation for "motor car", a synonym for automobile
• Motor Neuron - neurons that originate in the spinal cord and synapse with muscle fibers

• Timeline of motor and engine technology