Tripartite Agreement of 1936, an international monetary agreement entered into by the United States, France, and Great Britain to stabilize their nations' currencies.
Tripartite Declaration of 1950, signed by the United States, Britain, and France to guarantee the territorial status quo determined by Arab–Israeli armistice agreements
Tripartisme, the "Three-parties alliance", a coalition government in France after World War Ii
Madrid Accords, signed by Spain, Morocco, and Mauritania in 1975 to end Spanish presence in the territory of Spanish Sahara
The Tripartite Accord (Lebanon), signed on 28 December 1985 between three factions to end the Lebanese Civil War
The Tripartite Accord (1988), signed between Cuba, Angola and South Africa on 22 December 1988 to end the Angolan Civil War