Calhoun County is the name of several counties in the United States of America named after U.S. Vice President John C. Calhoun:
Calhoun County, Alabama Calhoun County, Arkansas Calhoun County, Florida Calhoun County, Georgia Calhoun County, Illinois Calhoun County, Iowa Calhoun County, Michigan Calhoun County, Mississippi Calhoun County, South Carolina Calhoun County, Texas Calhoun County, West Virginia
See also USS Calhoun County (LST-519), a World War II U.S. tank landing ship