- U.S. admiral: defeated Spanish fleet in Manila Bay during the Spanish-American War.
- U.S. philosopher and educator.
- U.S. educator, administrator, and innovator in the field of library science.
- U.S. lawyer and political leader.
- a male given name, form of David.
- John. 1859–1952, US pragmatist philosopher and educator: an exponent of progressivism in education, he formulated an instrumentalist theory of learning through experience. His works include The School and Society (1899), Democracy and Education (1916), and Logic: the Theory of Inquiry (1938)
