Čačak is a city and the administrative center of the Moravica District in central Serbia. It is located in the West Morava Valley. As of the 2022 census, the city within administrative borders has a population of 105,612 inhabitants.

The Morava Valley, is a general term which in its widest sense marks valleys of any of three Morava rivers in Serbia: the West Morava, the South Morava and the Great Morava. In the narrow sense, the term is applied only to the Great Morava Valley. The Serbian term follows the general manner of coining river valley names in Serbian using the prefix po- and suffix -je, meaning literally "(land) along the Morava". Morava valley lies in the central Balkans, at the crossroads which lead eastwards, towards the Black sea and Asia Minor, and further south, down the Vardar river into the Aegean sea.