The Grassroots Democratic Party (GDP; Khmer: គណបក្សប្រជាធិបតេយ្យមូលដ្ឋាន, abbr. គ.ប.ម.) is an independent political party based in Phnom Penh, Cambodia. It is headed by its chairman Yang Saing Koma, as party president and as secretary-general. The party is one of the candidates in the 2018 Cambodian parliamentary election of the National Assembly.