Andrew Ellicott was an American land surveyor who helped map many of the territories west of the Appalachians, surveyed the boundaries of the District of Columbia, continued and completed Pierre (Peter) Charles L'Enfant's work on the plan for Washington, D.C., and served as a teacher in survey methods for Meriwether Lewis.
- Occupation
- surveyor, explorer, cartographer, astronomer
- Position held
- geographer of the United States
- Citizenship
- United States
- Born
- January 24, 1754
- Died
- August 28, 1820
