- Bill Monroe , musician
- Earl Monroe , basketball player
- James Monroe , President of the United States
- Marilyn Monroe , American actress
- Dr. Marvin Monroe (The Simpsons) , cartoon character
- Robert Monroe , author, founder of The Monroe Institute
- Walter Stanley Monroe , former Prime Minister of Newfoundland
- Monroe Doctrine
- Munroe Effect , named after Charles Edward Munroe , is sometimes incorrectly called the Monroe effect
- Monroe , recurring cartoon character in Mad Magazine
- Monroe Calculator Company , a leading manufacturer of Adding Machine s and Calculator s
- University Of Louisiana At Monroe
- Monroe College , New York
- Monroe Community College , New York
- Monroe County Community College , Michigan
- Monroe Institute
- Monroe, Connecticut
- Monroe, Georgia
- Monroe, Indiana
- Monroe, Iowa
- Monroe, Louisiana
- Monroe, Maine
- Monroe, Massachusetts
- Monroe, Michigan
- Monroe, New Hampshire
- Monroe, New Jersey
- Monroe (village), New York
- Monroe (town), New York
- Monroe, North Carolina
- Monroe, Ohio
- Monroe, Oklahoma
- Monroe, Oregon
- Monroe, Pennsylvania
- Monroe, South Dakota
- Monroe, Utah
- Monroe, Virginia
- Monroe, Washington
- Monroe, Wisconsin
- Monroe (town), Wisconsin , two different towns
- Monroe Center, Illinois
- Monroe City, Indiana
- Monroe City, Missouri
- Monroe County, Alabama
- Monroe County, Arkansas
- Monroe County, Florida
- Monroe County, Georgia
- Monroe County, Illinois
- Monroe County, Indiana
- Monroe County, Kentucky
- Monroe County, Michigan
- Monroe County, Mississippi
- Monroe County, Missouri
- Monroe County, New York
- Monroe County, Ohio
- Monroe County, Pennsylvania
- Monroe County, Tennessee
- Monroe County, West Virginia
- Monroe County, Wisconsin
- Monroe Township, Michigan
- Monroe Township, Minnesota
- Monroe Township, New Jersey , two different townships
- Monroe Township, Pennsylvania , seven different townships
- Monroeville, Alabama
- Monroeville, Pennsylvania
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