53 : 1980 in Switzerland|Transport treaties|Treaties concluded in 1980|Treaties entered into force in 1985|Treaties of the People's Socialist Republic of Albania|Treaties of Algeria|Treaties of West Germany|Treaties of Austria|Treaties of Armenia|Treaties of Belgium|Treaties of Bosnia and Herzegovina|Treaties of the People's Republic of Bulgaria|Treaties of Croatia|Treaties of Denmark|Treaties of Spain|Treaties of Estonia|Treaties of Finland|Treaties of France|Treaties of Georgia (country)|Treaties of Greece|Treaties of the Hungarian People's Republic|Treaties of Iran|Treaties of Ba'athist Iraq|Treaties of Ireland|Treaties of Latvia|Treaties of Italy|Treaties of Lebanon|Treaties of Liechtenstein|Treaties of Lithuania|Treaties of Luxembourg|Treaties of North Macedonia|Treaties of Morocco|Treaties of Monaco|Treaties of Montenegro|Treaties of Norway|Treaties of the Netherlands|Treaties of the Polish People's Republic|Treaties of Portugal|Treaties of the Socialist Republic of Romania|Treaties of the United Kingdom|Treaties of Russia|Treaties of Serbia and Montenegro|Treaties of Slovakia|Treaties of Slovenia|Treaties of Switzerland|Treaties of Syria|Treaties of the Czech Republic|Treaties of Tunisia|Treaties of Turkey|Treaties of Ukraine|Treaties of Czechoslovakia|Treaties of Yugoslavia|Treaties entered into by the European Union