Marvin R. Weatherwax Jr. is an American politician. He is a Democrat representing District 15 in the Montana House of Representatives.
Weatherwax holds an associate's degree in computer science from Blackfeet Community College. He lives in Browning, Montana. He is a member of the Blackfeet Nation.
In 2018, former District 15 Representative George Kipp III did not run for re-election. Weatherwax ran for the seat and was unopposed in both the Democratic primary and the general election. He successfully ran for re-election in 2020.
As of June 2020, Weatherwax sits on the following committees: