Walter Alexander Coachbuilders was a Scottish builder of bus and coach bodywork based in Falkirk. The company was formed in 1947 to continue the coachbuilding activities of W. Alexander & Sons when their bus service operation was nationalised. After several mergers and changes of ownership it now forms part of Alexander Dennis.

W. Alexander & Sons Ltd was a bus operator and coachbuilder in Scotland. The company grew from small beginnings to become the largest bus operator in Scotland, and one of the largest in the U.K., by the time it was split up in 1961. Its coachbuilding activities, which were transferred to a separate company in 1947, still survive as part of Alexander Dennis.