Direct Answer: How Many U.S. Presidents Have Been Assassinated
Four sitting presidents of the United States have been assassinated: Abraham Lincoln (1865), James A. Garfield (1881), William McKinley (1901), and John F. Kennedy (1963). A fifth, Andrew Jackson, faced a known assassination attempt in 1835 that failed. These incidents are documented in congressional records, court testimony, and official investigations. For clarity, presidents who died in office from natural causes, illness, or non-assassination violence are not counted as assassinations. This verified explanation summarizes the who, what, when, and why of each confirmed assassination to provide a durable, factual baseline.
Defining Presidential Assassination: Criteria and Context
An assassination is the deliberate, unlawful killing of a public figure, especially a sitting head of state, for political or ideological reasons. Under this standard, historians and official inquiries classify four presidents as assassinated. To differentiate between true assassinations and other in-office deaths, consider these criteria:
- Actus reus: a direct harmful act intended to kill or mortally wound the president.
- Mens rea: the act was politically or ideologically motivated, not random crime or personal dispute alone.
- Office status: the president was serving at the time of the attack.
Attempts that did not result in death, as well as deaths from illness, accident, or natural causes while in office, do not meet this definition.
Confirmed Assassinations: Key Facts and Outcomes
Below is a compact, sourced overview of the four presidencies lost to assassination, including date, location, immediate outcome, and official follow-up.
| President | Date | Location | Outcome | Official Investigation |
|---|---|---|---|---|
| Abraham Lincoln | April 14, 1865 | Ford’s Theatre, Washington, D.C. | Died on April 15, 1865 | Military tribunal; conspirators identified and tried |
| James A. Garfield | July 2, 1881 | Baltimore & Potomac Railroad Station, Washington, D.C. | Died on September 19, 1881 | Congressional hearings; civil trial of Guiteau |
| William McKinley | September 6, 1901 | Pan-American Exposition, Buffalo, New York | Died on September 14, 1901 | Grand jury investigation; trial of Czolgosz |
| John F. Kennedy | November 22, 1963 | Dealey Plaza, Dallas, Texas | Died that afternoon | Warren Commission (1964); later reinvestigations |
Attempted Assassinations and Plots
Several other presidencies involved serious threats or attempts that did not result in death. Notable examples include:
- The 1835 attempt on Andrew Jackson, the only known assassination attempt on a sitting president that failed. Richard Lawrence fired two pistols at close range; both misfired. Jackson attacked Lawrence with his cane before being restrained.
- Unsuccessful plots and recurrent threats across U.S. history, often revealed in declassified documents and law enforcement reports. These underscore the persistent risks to presidential safety.
While important for historical context, these nonfatal events are not counted as assassinations under the strict definitional standard used here.
Aftermath and Long-Term Effects on Policy and Security
The assassinations of Lincoln, Garfield, McKinley, and Kennedy each reshaped how the United States protects its leaders. After Garfield and McKinley, legislative attention to presidential security grew, though formal protective details evolved gradually. Kennedy’s death in 1963 prompted immediate and sweeping changes, including the creation of the Secret Service’s comprehensive presidential protection mission and improvements to medical response with the president. Subsequent administrations have adjusted protocols in response to evolving threats, technologies, and intelligence practices. Security today reflects lessons drawn directly from these verified historical events.
Myths, Miscounts, and Gray Areas
Popular discussion sometimes conflates all in-office deaths of presidents or includes non-fatal attacks as "assassinations." Such usage dilutes the term and blurs accountability. By adhering to a consistent standard—deliberate, political killing of a sitting president—readers can distinguish between confirmed assassinations, attempted assassinations, and other causes of death. Where uncertainty exists, cautious documentation and clear sourcing are essential.