Tan Sri Mohammed Tahir Tan Tong Hye, also known as T. H. Tan (simplified Chinese: 陈东海; traditional Chinese: 陳東海; Pe̍h-ōe-jī: Tân Tong-hái) (31 October 1914 – 3 November 1985), was a Singapore-born journalist and politician who became the Secretary of the Malayan Chinese Association (MCA) and the first honorary Secretary-General of the Alliance Party in Malaya. He is mainly remembered for being among the three men (the others being Tunku Abdul Rahman and Tun Abdul Razak) who took part in the UMNO-MCA Alliance delegation to London in 1954 to demand for an effective elected majority in the Federal Legislative Council of Malaya.