Since George Washington's election in 1789, 43 men have served as President of the United States. They have led in times of peace and war, hardship and plenty, and served in tenures as short as one month and as long as 12 years. Learn more about America's Presidents. George Washington John Adams Thomas Jefferson James Madison James Monroe John Quincy Adams Andrew Jackson Martin Van Buren William Henry Harrison John Tyler James K. Polk Zachary Taylor Millard Fillmore Franklin Pierce James Buchnan Abraham Lincoln Andrew Johnson Ulysses S. Grant Rutherford B. Hayes James Garfield Chester Arthur Grover Cleveland Benjamin Harrison Grover Cleveland William Mc Kinley Theodore Roosevelt William Howard Taft Woodrow Wilson Warren G. Harding Calvin Coolidge Herbert Hoover Franklin D. Roosevelt Harry S. Truman Dwight D. Eisenhower John F. Kennedy Lyndon B. Johnson Richard M. Nixon Gerald R. Ford Jimmy Carter Ronald Regan George H. Bush William J. Clinton George W. Bush President Barack Obama