東京都議会
Higashimurayama has a mayor-council form of government with a directly elected mayor and a unicameral city council of 25 members. Higashimurayama, collectively with Higashiyamato and Musashimurayama, contributes three members to the Tokyo Metropolitan Assembly. In terms of national politics, the city is part of Tokyo 20th district of the lower house of the Diet of Japan.