Side-by-side black-and-white portraits of two men in suits; the man on the left faces forward with a neutral expression, while the man on the right points and speaks into microphones.

Throughout the 20th century, the U.S. was led by presidents who faced enormous challenges and decisions that shaped the modern world. While leadership requires many qualities, intelligence has played the biggest role in how these leaders approached complex problems. Some presidents were especially known for their sharp minds and ability to think under pressure.

From scholars and skilled debaters to leaders who were in genius-level territory, these figures show how intellect effects that path of American leadership. Let’s dive into 15 presidents from the 1900s with the highest IQs.

1. John F. Kennedy

A man in a dark suit and tie sits in a chair, looking directly at the camera. There is an American flag partially visible behind him, and the background is dimly lit.
via Flickr.com

IQ – 159.8

2. Bill Clinton

An older man with white hair speaks passionately at a microphone, wearing a dark blue blazer and a "Harris" campaign button, with a large American flag in the background.
via Flickr.com

IQ – 159

3. Jimmy Carter

A man in a suit sits at a wooden desk with an open binder, hands folded, in an office with beige curtains and a U.S. flag in the background.
va Flickr.com

IQ – 157

4. Woodrow Wilson

A serious, middle-aged man with glasses and short, neatly combed hair, wearing a dark suit, vest, white shirt, and patterned tie, sits against a softly blurred background.
via Wikimedia Commons

IQ – 155.2

5. Theodore Roosevelt

A man with glasses and a mustache sits at a desk, reading a document. He wears a suit with a tie and a flower on the lapel. Papers and a lamp are on the desk, and the setting appears to be an office.
via getarchive.net

IQ – 153

6. Franklin Delano Roosevelt

A man in a suit stands outside in front of a building with glass doors and shuttered windows, one hand in his pocket and the other holding a cane.
userdeleted/VIA Reddit.com

IQ – 150.5

7. Dwight D. Eisenhower

An older man in a suit speaks at a podium with the Seal of the President of the United States. He stands indoors, and a microphone and documents are on the podium. Another man is visible in the background.
via picryl.com

IQ – 140

8. Lyndon B. Johnson

A man in a suit sits at a desk covered with papers, holding a pen and looking at the camera. An American flag and part of a presidential seal are visible in the background.
via picryl.com

IQ – 140

9. Harry S. Truman

A smiling man in a light gray suit sits at a desk with papers, an American flag, and a presidential flag behind him, in an office with orange curtains.
via picryl.com

IQ – 140

10. George H. W. Bush

An older man in a dark blazer and light pink shirt smiles while walking in a crowded venue, with two men and an American flag visible in the background.
via Wikimedia Commons

IQ – 138-140

11. Herbert Hoover

A man in a suit sits at a desk holding a pen over a blank sheet of paper, looking toward the camera. There are books, papers, and office items on the desk, with a bookshelf and a wooden door in the background.
via getarchive.net

IQ – 137

12. Richard Nixon

A man in a suit and tie sits at a podium with microphones, pointing forward and looking serious. There is a curtain in the background.
userdeleted/VIA Reddit.com

IQ – 131-140

13. Gerald Ford

A man in a suit sits at a large desk in an office, writing on documents. There are papers and a globe on the desk, and a window with trees outside is visible in the background.
via picryl.com

IQ – 135

14. William Howard Taft

A distinguished older man with a mustache, dressed in a dark suit with a vest and tie, sits on an ornate wooden chair, looking directly at the camera with a neutral expression.
via Wikimedia Commons

IQ – 135

15. Calvin Coolidge

A man in a suit sits at a table reading an open book, with several closed books stacked nearby. The setting appears formal and historic. The handwritten text above reads “Calvin Coolidge.”
via getarchive.net

IQ – 130-135

Want to see more vintage content?

Check out 18 Rare Vintage Photos of People Doing Surprisingly Dangerous Things for Fun, or take a look at 25 Vintage Photos From 1952. Finally, if you want to see how dangerous park equipment used to be, check out 18 Vintage Photos of 1970s Park Equipment That Would Be Banned Today.

Meet the Writer

Patrick is a writer based in upstate New York, where he grew up and still calls home. Over the past year, he’s been diving deep into storytelling, especially tales rooted in history, the Wild West, lost treasures, and ancient artifacts. He’s also drawn to unsolved mysteries and whatever the internet can’t stop talking about.

Whether it’s a centuries-old legend or a bizarre internet rabbit hole, Patrick is always chasing the threads of a compelling story. When he’s not chasing stories, Pat’s probably hiking mountain trails with his dog, exploring new corners of the U.S., or doom-scrolling between hangouts with friends and family. He finds inspiration in nature, forgotten places, and random conversations—anything that sparks curiosity. Whether it’s city streets or backcountry paths, Patrick’s always on the lookout for the next great story.