Definitions of Morgan:
- noun: an American breed of small compact saddle horses
- noun: United States financier and philanthropist (1837-1913)
- noun: soldier in the American Revolution who defeated the British in the Battle of Cowpens, South Carolina (1736-1802)
- noun: a Welsh buccaneer who raided Spanish colonies in the West Indies for the English (1635-1688)
- noun: United States biologist who formulated the chromosome theory of heredity (1866-1945)
- noun: United States anthropologist who studied the Seneca (1818-1881)
- name: A surname (very common: 1 in 847 families; popularity rank in the U.S.: #57)
- name: A male given name (rare: 1 in 5555 males; popularity rank in the U.S.: #508)
- name: A female given name (rare: 1 in 4545 females; popularity rank in the U.S.: #576)