List of United States senators from Pennsylvania

ratified the United States Constitution on December 12, 1787, and elects its U.S. senators to class 1 and class 3. Officeholders are popularly elected, for a six-year term, beginning January 3. Elections are held the first Tuesday after November 1. Before 1914, they were chosen by the Pennsylvania General Assembly; before 1935, their terms began March 4. The state's current U.S. senators are Democrat John Fetterman and Republican Dave McCormick, making it one of four states to have a split Senate delegation, along with Maine, Vermont, and Wisconsin. Arlen Specter was Pennsylvania's longest-serving senator.

List of senators

! 1
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! 19
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! rowspan=3 | 21
! rowspan=6 | 26
! rowspan=3 | 22
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! rowspan=9 | 27
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! rowspan=18 | 25
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! rowspan=6 | 26
! rowspan=3 | 27
! rowspan=3 | 32