Silvan is a municipality and district of Diyarbakır Province, Turkey. Its area is 1,252 km2, and its population is 86,161 (2022). It is populated by Kurds.

Arrajan (Argan) was a medieval Persian city located between Fars and Khuzestan, which was settled since the civilisation of Elam in the second milennium BCE, and was important from the Sasanian Empire until the 11th century as the capital of a province of the same name that corresponds to present-day Behbahan in Khuzestan province, Iran.