Summary answer
Four sitting U.S. presidents have been assassinated: Abraham Lincoln (1865), James A. Garfield (1881), William McKinley (1901), and John F. Kennedy (1963). A fifth attempt on Gerald Ford in 1975 did not result in injury. These events prompted lasting reforms in presidential security, succession law, and the Secret Service’s protective mission.
Scope and method
This evergreen explainer describes verified incidents of presidential assassination, attempts, and consequential non-fatal attacks that altered procedures. Dates, locations, perpetrators, outcomes, and legislative or procedural responses are cited from official records and authoritative historical sources.
Confirmed assassinations of U.S. presidents
Only four U.S. presidents were assassinated while in office. All four events occurred before the modern era of Secret Service protection and prompted enduring changes to how the presidency is guarded and how executive succession is managed.
Abraham Lincoln
Abraham Lincoln was shot on April 14, 1865, at Ford’s Theatre in Washington, D.C., by John Wilkes Booth. He died the following morning, April 15, making him the first sitting president to be assassinated. His death reshaped Reconstruction policy and intensified debates over executive authority and national unity.
James A. Garfield
James A. Garfield was shot on July 2, 1881, at the Baltimore and Potomac Railroad Station in Washington, D.C., by Charles J. Guiteau. He lingered for 79 days before dying on September 19, 1881, of infections and medical complications. His death advanced civil service reform and spurred more rigorous medical standards in federal care.
William McKinley
William McKinley was shot on September 6, 1901, at the Temple of Music in Buffalo, New York, by Leon F. Czolgosz. He died eight days later, on September 14, 1901, from gangrene exacerbated by his wounds. McKinley’s death elevated Theodore Roosevelt and contributed to the expansion of the modern executive security apparatus.
John F. Kennedy
John F. Kennedy was shot on November 22, 1963, in Dallas, Texas, by Lee Harvey Oswald. He was pronounced dead at Parkland Memorial Hospital that same afternoon. Kennedy’s assassination triggered a nationwide trauma, numerous investigations (including the Warren Commission), and enduring debates over conspiracy theories, policy, and media coverage.
Notable non-fatal attacks and attempts
Several attacks targeted sitting presidents but did not result in death. These incidents also influenced security protocols and public perceptions of risk.
Gerald Ford (1975) — Sacramento, California
On September 5, 1975, Lynette ‘Squeaky’ Fromme pointed a loaded Colt .45 at President Gerald Ford in Sacramento. The gun did not fire due to a defective firing mechanism. Fromme was subdued by Secret Service agents and later sentenced to life in prison.
Gerald Ford (1975) — San Francisco, California
Seventeen days later, on September 22, 1975, Sara Jane Moore fired a revolver at Ford in San Francisco. The shot missed, and a bystander disarmed her. Ford continued his day, and both attackers were convicted and imprisoned.
Theodore Roosevelt (1912)
Former President Theodore Roosevelt was shot outside the Gilpatrick Hotel in Milwaukee on October 14, 1912. The bullet lodged in his chest after passing through his eyeglasses case and folded speech. Roosevelt declined immediate surgery and delivered his scheduled speech before seeking treatment; he recovered fully.
Ronald Reagan (1981)
Ronald Reagan was shot on March 30, 1981, outside the Washington Hilton by John Hinckley Jr. Reagan suffered a punctured lung but recovered after surgery. Press Secretary James Brady, Secret Service agent Tim McCarthy, and D.C. police officer Thomas Delahanty were also wounded. Brady’s long-term disability led to the Brady Handgun Violence Prevention Act in 1938’s legislative timeline (law enacted 1993).
Key facts at a glance
| President | Date | Location | Outcome | Significance |
|---|---|---|---|---|
| Abraham Lincoln | April 14, 1865 (died April 15) | Ford’s Theatre, Washington, D.C. | Death | First presidential assassination; reshaped Reconstruction |
| James A. Garfield | July 2, 1881 (died September 19) | Baltimore and Potomac Railroad Station, Washington, D.C. | Death | Advanced civil service reform; medical practices scrutiny |
| William McKinley | September 6, 1901 (died September 14) | Temple of Music, Buffalo, New York | Death | Catalyzed Theodore Roosevelt’s presidency; modern security evolution |
| John F. Kennedy | November 22, 1963 (died same day) | Dealey Plaza, Dallas, Texas | Death | Triggered Warren Commission; enduring conspiracy discourse |
Attempts and significant non-fatal incidents
Several additional acts of political violence targeted the presidency, resulting in non-fatal outcomes but prompting lasting changes to protective operations.
- Theodore Roosevelt (1912): Shot once in Milwaukee but recovered after delivering his scheduled address. Demonstrated the increasing risks faced by public officials.
- Gerald Ford (1975) — Fromme: Attempted in Sacramento; faulty gun mechanism prevented harm. Heightened scrutiny of lone actor threats.
- Gerald Ford (1975) — Moore: Attempted in San Francisco; similarly thwarted. Led to expanded Secret Service authority and resources.
- Ronald Reagan (1981): Punctured lung but recovered; led to improved communication protocols and the 1993 enactment of the Brady Handgun Violence Prevention Act (effective 1994).
Immediate and lasting consequences
The assassination of a president is a rare but transformative event. Lincoln’s death intensified unresolved questions about federal power and individual rights. Garfield and McKinley deaths exposed vulnerabilities in transport hubs and large public gatherings, leading to more formalized security planning. Kennedy’s assassination accelerated the creation of the Presidential Protection Division within the Secret Service and prompted numerous federal and state reforms. Modern protective intelligence, advance work, and threat assessment practices evolved directly from lessons learned across these incidents.
Succession and continuity of government
Each assassination triggered immediate constitutional succession: Lincoln was succeeded by Andrew Johnson, Garfield by Chester A. Arthur, McKinley by Theodore Roosevelt, and Kennedy by Lyndon B. Johnson. These transitions underscored the importance of clear statutory and constitutional guidance. Over time, legislation such as the Presidential Succession Act and the Twenty-fifth Amendment clarified roles, testing protocols, and disability procedures to ensure continuity.
How this topic remains relevant
The memory and analysis of presidential assassinations continue to inform security posture, public trust, and historical understanding of executive risk. Documentary reviews, official reports, and institutional after-actions ensure that each event contributes to present and future protection strategies, policy debates, and civic education about the presidency.
FAQs
How many U.S. presidents have been assassinated?
Four sitting U.S. presidents have been assassinated: Abraham Lincoln, James A. Garfield, William McKinley, and John F. Kennedy.
Were any assassinations by conspiracy?
Official investigations concluded that Lincoln, Garfield, McKinley, and Kennedy were each assassinated by lone actors. Despite extensive inquiries, no verified evidence of broader conspiracies has been found for these four events.
How have assassinations changed Secret Service protection?
Before these events, the Secret Service had no presidential protection mandate. After McKinley’s death, formal protection began; after Kennedy’s, the agency expanded operations, advanced intelligence methods, and enhanced infrastructure such as secure vehicles and communication systems.
What happens if a president is incapacitated but not killed?
The Twenty-fifth Amendment and the Presidential Succession Act define procedures for temporary transfer or permanent succession. Medical or disability scenarios are handled through declared incapacity by the president or vice-presidential invocation plus congressional review.
Are attempts and threats tracked today?
Yes. The Secret Service and federal partners maintain threat assessment and protective intelligence programs. Incidents are investigated, subjects are prosecuted when appropriate, and lessons are institutionalized in training and planning.