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
See also Syrmia (disambiguation) Eastern Syrmia (disambiguation)