Güdül is a municipality and district of Ankara Province, Turkey.

Güdül is a mountainous district with a dry climate featuring cold winters (down to -20 °C), hot summers (up to 35 °C) and a little rain in spring and autumn.

There is some agriculture and the crops include hot peppers and chick peas, which are dried and sold as leblebi.

Research shows occupation since prehistoric times, and caves along the river Kirmir contain stone workings apparently by the Hittites (2000 BC).

In 1071, the Byzantine armies were defeated by the Turks at the battle of Malazgirt, and soon afterwards all of central Anatolia came under Turkish control.