1908 United States presidential election in Pennsylvania

The 1908 United States presidential election in Pennsylvania took place on November 3, 1908, as part of the 1908 United States presidential election, throughout 46 states (Arizona and New Mexico were still territories that would participate in the next election). This was the first presidential election in which Oklahoma participated. Voters chose 34 representatives, or electors to the Electoral College, who voted for president and vice president.

Pennsylvania overwhelmingly voted for the Republican nominees, Secretary of War William Howard Taft of Ohio and his running mate James S. Sherman of New York. They defeated the Democratic nominees, former U.S. Representative William Jennings Bryan of Nebraska and his running mate John W. Kern of Indiana. Taft won the state by a landslide margin of 23.43%.

Bryan had previously lost Pennsylvania to William McKinley in both 1896 and 1900.