All US presidents take the oath of office, starting with the first president, George Washington.
Lyndon Johnson
John Tyler was the first person to take office after a president died.
Oath of Office
The first task of any president is to take the oath of office and be sworn into service as president.
James Monroe
Dwight Eisenhower
James Monroe
James Monroe-1817
Lyndon Baines Johnson was the first US President to take the oath of office while his wife, Lady Bird Johnson, held the bible. This took place in 1965.
He takes the oath of office on 20 January, following the election in November.
First he has to be legally elected as President or else become president by succession. Second he must be "sworn in" by taking the oath of office before a person who is legally qualified to administer oaths.