1808 United States House of Representatives elections in Pennsylvania

Elections to the United States House of Representatives were held in Pennsylvania on October 11, 1808, for the 11th Congress.

Background
Eighteen Representatives had been elected in the previous election, 15 Democratic-Republicans and 3 Federalists. All three Federalists and two of the Democratic-Republicans were quids, an alliance of moderate Democratic-Republicans and Federalists. One seat held by a Democratic-Republican had become vacant prior to this election and was filled in a special election held at the same time as this election.

Congressional districts
Pennsylvania was divided into 11 districts, of which four were plural districts with 11 Representatives between them, with the remaining 7 Representatives elected from single-member districts. The districts were:
 * The PA's 1st congressional district (3 seats) consisted of Delaware and Philadelphia counties (including the City of Philadelphia)
 * The PA's 2nd congressional district (3 seats) consisted of Bucks, Luzerne, Montgomery, Northampton, and Wayne Counties
 * The PA's 3rd congressional district (3 seats) consisted of Berks, Chester, and Lancaster Counties
 * The PA's 4th congressional district (2 seats) consisted of Cumberland, Dauphin, Huntingdon, and Mifflin Counties
 * The PA's 5th congressional district consisted of Centre, Clearfield, Lycoming, McKean, Northumberland, Potter, and Tioga Counties
 * The PA's 6th congressional district consisted of Adams and York Counties
 * The PA's 7th congressional district consisted of Bedford and Franklin Counties
 * The PA's 8th congressional district consisted of Armstrong, Cambria, Indiana, Jefferson, Somerset, and Westmoreland Counties
 * The PA's 9th congressional district consisted of Fayette and Greene Counties
 * The PA's 10th congressional district consisted of Washington County
 * The PA's 11th congressional district consisted of Allegheny, Beaver, Butler, Crawford, Erie, Mercer, Venango, and Warren Counties

Luzerne County's western border was altered between the 1806 and 1808 elections, altering the boundary between the 2nd and 5th districts

Note: Many of these counties covered much larger areas than they do today, having since been divided into smaller counties

Election results
Thirteen incumbents (10 Democratic-Republicans and 3 Federalists) ran for re-election, of whom 11 won re-election. The incumbents Jacob Richards (DR) of the PA's 1st congressional district, John Hiester (DR) of the PA's 3rd congressional district, Daniel Montgomery (DR) of the PA's 5th congressional district and William Hoge (DR) of the PA's 10th congressional district did not run for re-election. There was also a vacancy in the 1st district. One seat changed from Federalist to Democratic-Republican control.

Special election
Benjamin Say (DR) of the PA's 1st congressional district resigned in June, 1809, and a special election was held to fill the resulting vacancy