1812 United States Senate election in Pennsylvania

The 1812 United States Senate election in Pennsylvania was held on December 8, 1812. Abner Lacock was elected by the Pennsylvania General Assembly to the United States Senate.

Results
Incumbent Democratic-Republican Andrew Gregg, who was elected in 1806, was not a candidate for re-election to another term. The Pennsylvania General Assembly, consisting of the House of Representatives and the Senate, convened on December 8, 1812, to elect a new Senator to fill the term beginning on March 4, 1813. The results of the vote of both houses combined are as follows:


 * -bgcolor="#EEEEEE"
 * colspan="3" align="right" | Totals
 * align="right" | 126
 * align="right" | 100.00%
 * }
 * }