Every U.S. President Ranked by IQ

Benjamin Harrison came from a family steeped in politics and education, and it showed in his sharp, lawyerly intellect. A graduate of Miami University in Ohio, he was articulate, disciplined, and deeply read in law and history. His speeches were precise and dense with reasoning, reflecting a mind built for detail.

He approached leadership with the same analytical focus, valuing structure, order, and sound argument over charisma. Though often seen as stiff, he governed thoughtfully—modernizing the Navy, supporting civil rights, and improving tariffs through study and strategy. His intelligence worked quietly, more in careful calculation than in grand gestures.