Lễ nhậm chức lần thứ hai của William McKinley

The second inauguration of William McKinley as president of the United States was held on Monday, March 4, 1901, at the East Portico of the United States Capitol in Washington, D.C. This was the 29th inauguration and marked the commencement of the second and final term of William McKinley as president and the only term of Theodore Roosevelt as vice president. McKinley was assassinated 194 days into this term, and Roosevelt succeeded to the presidency.

Chief Justice Melville Fuller administered the oath of office. This was the first inauguration to take place in the 20th century. This was also the first inauguration to be arranged by the Joint Committee on Inaugural Ceremonies and organized by both the House of Representatives and the Senate.