Tasil (Arabic: تسيل, also spelled Tsil) is a town in southern Syria, administratively part of the Izra District of the Daraa Governorate.

Nearby localities include Nawa to the northeast, Adwan and al-Shaykh Saad to the east, Jalin and Tafas to the south, Saham al-Jawlan to the southwest and Saida and the Golan Heights to the west.

[2] Ancient remains in Tasil indicate that a temple dedicated to one of the Roman emperors Constantine the Great or Constantius II and dated to the early 4th-century CE was located in the village.

They paid a fixed tax-rate of 25% on wheat, barley, summer crops, goats or beehives, and a water mill; a total of 4,500 akçe.

There was a local superstition among Tasil's inhabitants that any resident who removed and gave travelers stones from the village's structures would be punished by God either by death or another misfortune.