The Nationalist Party (in Spanish: Partido Nacionalista, PN) was a Bolivian reformist and nationalist political party. The Nationalist Party was founded on 29 December 1926 by President of the Republic Hernando Siles Reyes and a group of young intellectuals, such as Augusto Céspedes, Carlos Montenegro, and Enrique Baldivieso. Hernando Siles Reyes was one of the founders of the Republican party (1914) and Republican Socialist Party (1921). He was Bautista Saavedra's hand-picked successor, but once in power he broke from him and formed his own faction which became Nationalist Party.