Which president assumed office after the assassination of John F. Kennedy?

Lyndon B. Johnson became president after the assassination of John F. Kennedy on November 22, 1963. Johnson, who was serving as vice president at the time, was sworn in as the 36th president of the United States aboard Air Force One just hours after Kennedy's death. His rise to the presidency was significant in U.S. history, as he then pushed forward an ambitious domestic agenda known as the "Great Society," which aimed at eliminating poverty and racial injustice. Johnson's leadership during this tumultuous time also included significant involvement in the Vietnam War, which would shape U.S. foreign policy during the 1960s.

The other individuals listed held presidency at different times; for instance, Richard Nixon succeeded Johnson after his term ended, while Gerald Ford became president after Nixon resigned. Harry S. Truman served as president before Kennedy, making Lyndon B. Johnson the direct successor to Kennedy in the wake of that tragic event.