Western Syrmia

Western Syrmia may refer to:


 * in geography, western parts of the region of Syrmia
 * in early modern history, western parts of the Syrmia County
 * during the Ottoman rule, western parts of the Sanjak of Syrmia
 * in modern history, western parts of the Syrmia Oblast
 * southeastern part of the Eastern Slavonia, Baranja and Western Syrmia (disambiguation) entity
 * in administration, colloquial term for the Vukovar-Syrmia County in Croatia