This is a list of the heads of state of Tanzania, from the independence of Tanganyika in 1961 to the present day.From 1961 to 1962 the head of state under the Tanganyika Independence Act 1961 was the queen of Tanganyika, Elizabeth II, who was also the monarch of the United Kingdom and the other Commonwealth realms. The monarch was represented in Tanganyika by a governor-general. Tanganyika became a republic under the Constitution of 1962 and the monarch and governor-general were replaced by an executive president. After the Zanzibar Revolution in 1964, the People's Republic of Zanzibar and Pemba united with mainland Tanganyika to form the United Republic of Tanganyika and Zanzibar, which was later renamed to the United Republic of Tanzania.