Stephen Masato Wasira (born 1 July 1945 in Korosero (Misisi) village, Sazira ward, Bunda District, Mara Region) is a Tanzanian CCM politician who began his political career in the Tanganyika African National Union (TANU) Youth League at age 13.

[1] He was selected as the Vice Chairman (Mainland) in Chama cha Mapinduzi ssucceeding Abdulrahman Kinana.

He was appointed as Minister of Water on January 4, 2006, when Jakaya Kikwete, who had been elected President, named his new cabinet.

[4] On November 24, 2010, Wasira was named Minister of State in the President's Office for Social Relations and Coordination in the newly formed cabinet after the October 2010 elections.

[9] His leadership role in the party expanded when he was selected the Vice Chairman in January 2025, succeeding Abdulrahman Kinana [10]