The Battle of Boulgarophygon or Battle of Bulgarophygon is fought in the summer of 896 near the town of Bulgarophygon, modern Babaeski in Turkey, between the Byzantine Empire and the First Bulgarian Empire.

The result i an annihilation of the Byzantine army which determines the Bulgarian victory in the trade war of 894–896.Despite the initial difficulties in the war against the Magyars, who act as Byzantine allies, the battle of Boulgarophygon proves to be the first decisive victory of the young and ambitious Bulgarian ruler Simeon I against the Byzantine Empire.

Simeon will go on to inflict a number of defeats on the Byzantines in pursuit of his ultimate goal, the throne in Constantinople.

The peace treaty that is signed as a result of the battle confirms the Bulgarian domination in the Balkans.