| Election Name: | 2008 Pennsylvania House of Representatives election |
| Country: | Pennsylvania |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2006 Pennsylvania House of Representatives election |
| Previous Year: | 2006 |
| Next Election: | 2010 Pennsylvania House of Representatives election |
| Next Year: | 2010 |
| Seats For Election: | All 203 seats in the Pennsylvania House of Representatives |
| Majority Seats: | 102 |
| Election Date: | November 4, 2008 |
| Leader1: | Bill DeWeese |
| Leader Since1: | January 3, 1995 |
| Party1: | Democratic Party (United States) |
| Leaders Seat1: | 50th |
| Last Election1: | 102 |
| Seat Change1: | 2 |
| Seats After1: | 104 |
| Leader2: | Sam Smith |
| Leader Since2: | January 2, 2007 |
| Party2: | Republican Party (United States) |
| Leaders Seat2: | 66th |
| Last Election2: | 101 |
| Seat Change2: | 2 |
| Seats After2: | 99 |
| Map Size: | 450px |
| Speaker | |
| Before Election: | Dennis O'Brien |
| Before Party: | Republican Party (United States) |
| After Election: | Keith McCall |
| After Party: | Democratic Party (United States) |
The 2008 Elections for the Pennsylvania House of Representatives were held on November 4, 2008, with all districts being contested. Necessary primary elections were held on April 22, 2008.[1] The term of office for those elected in 2008 will run from January 6, 2009 until November 2010. State Representatives are elected for two-year terms, with the entire House of Representatives up for a vote every two years.
| Affiliation | Seats after 2006 Election | Seats after 2008 Election | Membership Change | ||
| Democratic Party | 102 | 104 | +2 | ||
| Republican Party | 101 | 99 | -2 | ||