Yes, MORGAN is a Scrabble word!

Letter values in Scrabble US: M 3, O 1, R 1, G 2, A 1, N 1.

Is it a valid word?

MORGAN is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

United States anthropologist who studied the Seneca (1818-1881)
United States biologist who formulated the chromosome theory of heredity (1866-1945)
a Welsh buccaneer who raided Spanish colonies in the West Indies for the English (1635-1688)
soldier in the American Revolution who defeated the British in the battle of Cowpens, South Carolina (1736-1802)
United States financier and philanthropist (1837-1913)
an American breed of small compact saddle horses

Also: lewis henry morgan, thomas hunt morgan, henry morgan, sir henry morgan, daniel morgan, j. p. morgan, john pierpont morgan.