2008 Pennsylvania Republican presidential primary

The 2008 Pennsylvania Republican presidential primary was an election held on April 22 by the Pennsylvania Department of State in which voters chose their preference for the Republican Party's candidate for the 2008 United States presidential election. Voters also chose the Pennsylvania Republican Party's candidates for various state and local offices. The selected candidates were placed on the ballot of the 2008 General Election on November 4, 2008. The Republican primary was part of a General Primary that also included the 2008 Pennsylvania Democratic presidential primary.

Polls opened at 7:00 am and closed at 8:00 pm. John McCain was the winner. He had already been declared the presumptive Republican Presidential nominee, having secured enough delegate votes in earlier primary contests to win the nomination at the 2008 Republican National Convention.