Mark James Mwandosya (born 28 December 1949) is a Tanzanian CCM politician and Member of Parliament for Rungwe East constituency. He currently serves as a Minister without portfolio in the Cabinet of Tanzania.
Mwandosya was a youth leader of the Tanganyika African National Union (TANU) from 1967 to 1968 and became a member of TANU in 1971, remaining a member when TANU became the Chama Cha Mapinduzi (CCM) in 1977. He taught at the University of Dar es Salaam from 1977 to 1987, as a lecturer from 1977 to 1980, as a senior lecturer from 1980 to 1983, and as an associate professor from 1983 to 1987.
He was Commissioner at the Ministry of Water, Energy and Minerals from 1985 to 1990, Principal Secretary at the Ministry of Water, Energy and Minerals from 1990 to 1992, and Principal Secretary at the Ministry of Industries and Trade from 1992 to 1993. From 1994 to 2000, he again taught at the University of Dar es Salaam, this time as a Professor.
He has been a member of the National Assembly of Tanzania for the CCM since 2000, and he was Minister of Communication and Transport from 2000 to 2005. He was then appointed as Minister of State in the Vice-President’s Office responsible for the Environment on January 4, 2006. He was moved to the position of Minister of Water and Irrigation on February 12, 2008.