Trialism (disambiguation)

Trialism may refer to:


 * Trialism (philosophy), a designation for several philosophical concepts
 * Trialism (politics), a political doctrine focused on relations between three political subjects:
 * Trialism in Austria-Hungary, a political doctrine advocating transformation of the dual Austro-Hungarian Monarchy into a triune state, by creating a third constituent polity
 * Trialism of Dalmatia, Croatia and Slavonia, a political doctrine on relations between historical realms of Dalmatia, Croatia and Slavonia, prominent mostly during the period between 1848 and 1918
 * Trialism in the Kingdom of Serbs, Croats and Slovenes (Yugoslavia), a political doctrine advocating transformation of the kingdom into a complex state, with three constituent polities, for Serbs, Croats and Slovenes