As of my last knowledge update in January 2022, here is a list of United States Presidents:
- George Washington (1789-1797)
- John Adams (1797-1801)
- Thomas Jefferson (1801-1809)
- James Madison (1809-1817)
- James Monroe (1817-1825)
- John Quincy Adams (1825-1829)
- Andrew Jackson (1829-1837)
- Martin Van Buren (1837-1841)
- William Henry Harrison (1841)
- Note: William Henry Harrison died in office after only 31 days.
- John Tyler (1841-1845)
- James K. Polk (1845-1849)
- Zachary Taylor (1849-1850)
- Note: Zachary Taylor died in office, and Millard Fillmore succeeded him.
- Millard Fillmore (1850-1853)
- Franklin Pierce (1853-1857)
- James Buchanan (1857-1861)
- Abraham Lincoln (1861-1865)
- Note: Abraham Lincoln was assassinated, and Andrew Johnson succeeded him.
- Andrew Johnson (1865-1869)
- Ulysses S. Grant (1869-1877)
- Rutherford B. Hayes (1877-1881)
- James A. Garfield (1881)
- Note: James A. Garfield was assassinated, and Chester A. Arthur succeeded him.
- Chester A. Arthur (1881-1885)
- Grover Cleveland (1885-1889)
- Benjamin Harrison (1889-1893)
- Grover Cleveland (1893-1897)
- Note: Grover Cleveland served non-consecutive terms.
- William McKinley (1897-1901)
- Note: William McKinley was assassinated, and Theodore Roosevelt succeeded him.
- Theodore Roosevelt (1901-1909)
- William Howard Taft (1909-1913)
- Woodrow Wilson (1913-1921)
- Warren G. Harding (1921-1923)
- Note: Warren G. Harding died in office, and Calvin Coolidge succeeded him.
- Calvin Coolidge (1923-1929)
- Herbert Hoover (1929-1933)
- Franklin D. Roosevelt (1933-1945)
- Note: Franklin D. Roosevelt served four terms. The 22nd Amendment later limited presidents to two terms.
- Harry S. Truman (1945-1953)
- Dwight D. Eisenhower (1953-1961)
- John F. Kennedy (1961-1963)
- Note: John F. Kennedy was assassinated, and Lyndon B. Johnson succeeded him.
- Lyndon B. Johnson (1963-1969)
- Richard Nixon (1969-1974)
- Note: Richard Nixon resigned, and Gerald Ford succeeded him.
- Gerald Ford (1974-1977)
- Jimmy Carter (1977-1981)
- Ronald Reagan (1981-1989)
- George H.W. Bush (1989-1993)
- Bill Clinton (1993-2001)
- George W. Bush (2001-2009)
- Barack Obama (2009-2017)
- Donald Trump (2017-2021)
- Joe Biden (2021-present, as of the last knowledge update in January 2022)
Please note that there might have been changes since my last update.