Cohors XX Palmyrenorum

Cohors XX Palmyrenorum
Roman infantry helmet (late 1st century)
Active	Late 2nd century AD to at least c. 257 AD
Country	Roman Empire
Type	Roman auxiliary cohort
Role	infantry/cavalry
Size	1,040 men (800 infantry, 240 cavalry)
Garrison/HQ	Dura-Europos

The Cohors XX Palmyrenorum ("20th Cohort of Palmyrenes") was an auxiliary cohort of the Roman Imperial army. It was a cohors equitata milliaria, mixed infantry and cavalry regiment, originally recruited from the inhabitants of Palmyra in Roman Syria.

The unit was probably raised in the late 2nd century, when Palmyra became part of the Roman Empire. At first they served in the province of Dacia. In the early 3rd century they were stationed in Dura-Europos. The headquarters of the Cohors XX Palmyrenorum was the temple of Artemis Azzanathkona aside the Praetorium.