Answer First
Four U.S. presidents were assassinated while in office: Abraham Lincoln (1865), James A. Garfield (1881), William McKinley (1901), and John F. Kennedy (1963). A fifth president, Ronald Reagan, survived an assassination attempt in 1981. This verified explainer details each event, context, and lasting impact, avoiding speculation and focusing on recorded facts and timelines useful for long-term reference.
Definition: What Counts as an Assassination Attempt
An assassination is defined as a premeditated, politically motivated attack intended to kill a sitting president or president-elect. For this overview, we include only incidents where the attacker’s intent and the political context are documented by official investigations, court records, or historical consensus. Non-assassination threats, protests, or security failures are noted only when they clarify the incident’s status.
Confirmed Presidential Assassinations
These four incidents meet the criteria of confirmed assassinations of sitting U.S. presidents, with well-documented motives, trials, and historical records.
Abraham Lincoln (1865)
Lincoln was shot by John Wilkes Booth on April 14, 1865, at Ford’s Theatre in Washington, D.C., and died the following morning. The attack was part of a broader Confederate-sympathizer conspiracy to decapitate the Union government. Booth’s motive was rooted in Confederate defeat and opposition to Lincoln’s policies on Reconstruction and emancipation. Lincoln’s death reshaped post-Civil War politics and remains a pivotal moment in American memory.
James A. Garfield (1881)
Garfield was shot by Charles J. Guiteau on July 2, 1881, at the Baltimore and Potomac Railroad Station in Washington, D.C. Guiteau believed he deserved a political reward and acted after being denied appointment as a consul. Garfield lingered for 79 days before dying on September 19, 1881, due to infections and medical mishandling rather than the initial wound alone. The case spurred civil service reform and federal protections for presidential security.
William McKinley (1901)
McKinley was shot by Leon Czolgosz on September 6, 1901, at the Pan-American Exposition in Buffalo, New York. Czolgosz, an anarchist, opposed McKinley’s policies and imperial expansion. McKinley died on September 14 after developing gangrene from the wounds. The assassination accelerated legislative changes for presidential protection and influenced early 20th-century counterterrorism measures.
John F. Kennedy (1963)
Kennedy was shot by Lee Harvey Oswald on November 22, 1963, in Dallas, Texas. Oswald acted alone according to the Warren Commission, though speculation and conspiracy theories persist. Kennedy’s death triggered national mourning, advances in forensics and media coverage, and long-term shifts in Secret Service protocols. Official reinvestigations, including the House Select Committee on Assassinations, have reaffirmed the lone-gunner conclusion while acknowledging ambiguities in some evidence.
Survived Attempts and Non-Assassination Incidents
Other attackers targeted sitting presidents but failed to cause fatal injury. These cases are summarized below with outcomes and key context.
Attempted Assassinations Where the President Survived
| President | Date | Attacker | Outcome | Key Notes |
|---|---|---|---|---|
| Andrew Jackson | January 30, 1835 | Richard Lawrence | Survived; both pistols misfired | First presidential assassination attempt; mental illness cited |
| Theodore Roosevelt | October 14, 1912 | John Schrank | Survived; chest wound not fatal | Campaign event in Milwaukee; long-lived impact on TR’s schedule |
| Franklin D. Roosevelt | February 15, 1933 | Giuseppe Zangara | Survived; Chicago mayor mortally wounded | Miami campaign; five injured, mayor died; Zangara executed |
| Harry S. Truman | November 1, 1950 | Oscar Collazo & Griselio Torresola | Survived; White House guard mortally wounded | Blair House attack; Torresola killed, Collazo sentenced to life |
| Ronald Reagan | March 30, 1981 | John Hinckley Jr. | Survived; press secretary and police officer wounded | Attempted to impress Jodie Foster; found not guilty by reason of insanity |
Presidents Killed After Leaving Office
James A. Garfield and William McKinley both survived their initial attacks but later died from their wounds while serving. No U.S. president has been assassinated after leaving office in a confirmed, politically motivated attack widely recognized as an assassination.
Official Investigations and Consensus
- Lincoln: No formal modern investigation; historical consensus attributes killing to Booth.
- Garfield: Medical malpractice and infection documented; Guiteau convicted and executed.
- McKinley: Czolgosz’s anarchist motive confirmed; trial and execution recorded.
- Kennedy: Warren Commission (1964) and House Select Committee (1979) concluded Oswald acted alone, while acknowledging some unresolved forensic questions.
Legacy and Security Evolution
The assassinations drove major reforms: the Secret Service’s protective mission expanded in 1902 after McKinley’s death; the Presidential Protection Act of 1965 extended safeguards to major presidential and vice-presidential candidates and families; and JFK’s death accelerated forensic, medical, and communication protocols. Public trust and threat assessments continue to shape how potential risks are evaluated and disclosed.
Afterword: Why This Question Remains Relevant
Because only four sitting presidents have been assassinated, each case becomes a reference point for understanding political violence, institutional response, and historical memory. For researchers, educators, and the public, clarity on facts, timelines, and outcomes supports informed discussion and long-term perspective, which is why precise, verified information on this topic endures.