"I do solemnly swear (or affirm) that I will faithfully execute the office 
of President of the United States, and will to the best of my ability, preserve, 
protect and defend the Constitution of the United States."

Each president recites the oath during their Inauguration, 
in accordance with Article II, Section I of the U.S. Constitution


Presidents of theUnited States of America

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

John Tyler
1841-1845

James K. Polk
1845-1849

Zachary Taylor
1849-1850

Millard Fillmore
1850-1853

Franklin Pierce
1853-1857

James Buchanan
1857-1861

Abraham Lincoln
1861-1865


Abraham Lincoln
1861-1865

Andrew Johnson
1865-1869

Ulysses S. Grant
1869-1877

Rutherford B. Hayes
1877-1881

James Garfield
1881

Chester A. Arthur
1881-1885

Grover Cleveland
1885-1889

Benjamin Harrison
1889-1893

Grover Cleveland
1893-1897

William McKinley
1897-1901

Theodore Roosevelt
1901-1909

William Howard Taft
1909-1913

Woodrow Wilson
1913-1921

Warren G. Harding 
1921-1923

Calvin Coolidge
1923-1929

Herbert Hoover
1929-1933

Franklin D. Roosevelt
1933-1945

Harry S. Truman
1945-1953

Dwight D. Eisenhower
1953-1961

John F. Kennedy
1961-1963

Lyndon B. Johnson
1963-1969

Richard M. Nixon
1969-1974

Gerald R. Ford
1974-1977

James Carter
1977-1981

Ronald Reagan 
1981-1989

George H. W. Bush
1989-1993

William J. Clinton
1993-2001

George W. Bush
2001-2009

Barack Obama
2009 - 2017

Donald J. Trump
2017 To Present