Sirwan

Sirwan is a term used as both a toponym and a given name in Kurdish-speaking regions of Iran and Iraq. It may refer to the Sirwan River, a transboundary watercourse in the Zagros Mountains that crosses the Iran–Iraq border.

The river originates in western Iran and flows southeast into eastern Iraq, where it joins the Diyala River, a tributary of the Tigris. The Sirwan basin forms part of the greater Diyala watershed and has historically supported irrigation, settlements, and local transport. The river's cross-border nature has also made it a focus of regional water management and infrastructure projects.

In addition to the river, Sirwan is used as a male given name in Kurdish and some Persian-speaking communities. The name is chosen for individuals in Iran, Iraq, and the Kurdish diaspora, and may reflect cultural ties to geography or nature.

Places and institutions in the Kurdish regions sometimes bear the name Sirwan, reflecting the river's prominence in local geography. The term can therefore refer to either a natural feature or a personal name in Kurdish-speaking contexts.