Cisleithania (, also Zisleithanien, , , , , , , transliterated: Tsysleitàniia) was a common yet unofficial denotation of the northern and western part of Austria-Hungary, the Dual Monarchy created in the Compromise of 1867—as distinguished from Transleithania, i.e. the Hungarian Lands of the Crown of Saint Stephen east of ("beyond") the Leitha River.

Cisleithania (, also Zisleithanien, , , , , , , transliterated: Tsysleitàniia) was a common yet unofficial denotation of the northern and western part of Austria-Hungary, the Dual Monarchy created in the Compromise of 1867—as distinguished from Transleithania, i.e. the Hungarian Lands of the Crown of Saint Stephen east of ("beyond") the Leitha River.