Mulliners Limited of Birmingham was a British coachbuilding business in Bordesley Green, with factories in Bordesley Green and Cherrywood Roads. It made standard bodies for specialist car manufacturers. In the 19th century there were family ties with founders Mulliners of Northampton and the businesses of other Mulliner brothers and cousins but it became a quite separate business belonging to Herbert Mulliner.

A coachbuilder or body-maker is a person or company who manufactures bodies for passenger-carrying vehicles. Coachwork is the body of an automobile, bus, horse-drawn carriage, or railway carriage. The word "coach" was derived from the Hungarian town of Kocs. A vehicle body constructed by a coachbuilder may be called a "coachbuilt body" or "custom body".