Sincan is a municipality and metropolitan district of Ankara Province, Turkey.

[4] Sincan has friendly relations with the municipality of Doboj Jug from Bosnia and Herzegovina.

There is some agriculture and light industry in Sincan, but the majority of people commute to Ankara by rail.

There are 57 neighbourhoods in Sincan District:[6] Even prior to the period of the Ottoman Empire, a village stood in this location, which subsequently grew to when Mustafa Kemal Atatürk commissioned a housing project here for Turkish refugees from Bulgaria.

This was the furthest spot in Anatolia in which the Greek Army had advanced to.