The 44 Dumbest U.S. Presidents Ranked By IQ

President Donald Trump may not have “unmatched wisdom,” but he’s smarter than a lot of U.S. presidents! Here’s how all 44 presidents stack up, from highest to lowest IQ, according to a 2006 study by Dean Keith Simonton.

44. John Quincy Adams: 175

The sixth president of the United States is far and away the smartest man who has ever held the highest office. With an unbelievable estimated IQ of 175, John Quincy Adams attended several schools in Europe before returning to the U.S. to complete his education at Harvard University. He’s so smart that there’s a double-digit gap between him and the next-smartest president…