The Alvis TC 21 was a British sporting car made by Alvis cars between 1953 and 1955. It was an updated version of the TA 21. The car was available in four-door saloon and drophead versions. The bodies style was essentially the same as the TA 21, one of the differences was the fitting of chrome-plated window surround on the doors. The saloon bodies were made for Alvis by Mulliners in Birmingham and the dropheads by Tickford.