The ambassador of Russia to Tanzania is the official representative of the president and the government of the Russian Federation to the president and the government of Tanzania.
The ambassador and his staff work at large in the Russian Embassy in Dar es Salaam. The current Russian Ambassador to Tanzania is , incumbent since 5 April 2022.
The Soviet Union was one of the first countries to recognize the Republic of Tanganyika following its independence from the United Kingdom, with diplomatic relations established on 11 December 1961. The first ambassador, , was appointed on 14 June 1962, and presented his credentials on 28 June 1962. With the creation of the People's Republic of Zanzibar and Pemba following the Zanzibar Revolution in early 1964, the Soviet Union also established diplomatic relations with this new state on 18 January 1964. The Republic of Tanganyika and the People's Republic of Zanzibar and Pemba unified to form the United Republic of Tanzania on 26 April 1964. With the dissolution of the Soviet Union in 1991, the United Republic of Tanzania recognised the Russian Federation as its successor. Representatives have continued to be appointed between the two countries since this time.