In ancient geography, Peuce (Ancient Greek: πεύκη, romanized: peúkē, lit. 'pine tree') is a former island in the Danube Delta, in Scythia Minor (present-day Tulcea County, Romania). It was about the size of the island of Rhodes. The inhabitants of the island were called Peucini (Ancient Greek: Πευκῖνοι).
It was to this island that in the 330s BC the West Thracian Triballian king Syrmus took refuge when pursued by Alexander the Great. Alexander brought ships up the Danube to use in an assault on the island. The attempts failed due to the swift current of the river, steep banks, and fierce defense. Eventually the Macedonians abandoned their attacks on Peuce and instead crossed into the territory of the Getae.
