Madison County may refer to the following counties in the United States:
Madison County, Alabama (organized as Madison County, Mississippi Territory)
Madison County, Arkansas
Madison County, Florida
Madison County, Georgia
Madison County, Idaho
Madison County, Illinois
Madison County, Indiana
Madison County, Iowa
Madison County, Kentucky, originally Madison County, Virginia (1785–1792)
Madison County, Mississippi
Madison County, Missouri
Madison County, Montana
Madison County, Nebraska
Madison County, New York
Madison County, North Carolina
Madison County, Ohio
Madison County, Tennessee
Madison County, Texas
Madison County, Virginia (established 1792)