thumb|right|250px|Fox Valley
The Fox Valley—also commonly known as the Fox River Valley—is a region centered on the Fox River of Northern Illinois, along the western edges of the Chicago metropolitan area. The region extends from the village of Antioch, in far northern Illinois, to the city of Ottawa in the south. since the early 20th century.
Prominent cities
The following is a list of cities and villages from north to south, along the Fox River Valley:
- Antioch
- Fox Lake
- Johnsburg
- McHenry
- Fox River Grove
- Cary
- Algonquin
- Carpentersville
- East Dundee
- West Dundee
- Elgin
- South Elgin
- Wayne
- Campton Hills
- St. Charles
- Geneva
- Batavia
- North Aurora
- Aurora
- Montgomery
- Oswego
- Yorkville
- Millbrook
- Millington
- Sheridan
- Ottawa