Ban Manang Khasilah is the name of a mansion in Bangkok, that was built by King Vajiravudh as a gift for his former chief of the Royal Household.

During Prime Minister Field Marshall Phibun Songkram's second term in office, it served as the government's guesthouse and later as the head office of the Phibun's political party Seri Manang Khasilah.

Since 1975, it has been the office of the Thai National Council of Women, and since 2008, part of it has been made into a center of learning aiming at the development of political democracy.