| Election Name: | 1848 Pennsylvania gubernatorial election |
| Country: | Pennsylvania |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1847 Pennsylvania gubernatorial election |
| Previous Year: | 1847 |
| Next Election: | 1851 Pennsylvania gubernatorial election |
| Next Year: | 1851 |
| Image1: | W F Johnston.jpg |
| Nominee1: | William F. Johnston |
| Party1: | Whig Party (United States) |
| Popular Vote1: | 168,522 |
| Percentage1: | 50.03% |
| Party2: | Democratic Party (United States) |
| Nominee2: | Morris Longstreth |
| Popular Vote2: | 168,225 |
| Percentage2: | 49.95% |
| Map Size: | 250px |
| Governor | |
| Before Election: | William F. Johnston |
| Before Party: | Whig Party (United States) |
| After Election: | William F. Johnston |
| After Party: | Whig Party (United States) |
The 1848 Pennsylvania gubernatorial election occurred on October 10, 1848. Incumbent Whig governor William F. Johnston, who became governor following the resignation and subsequent death of Francis R. Shunk in July 1848, narrowly defeated Democratic candidate Morris Longstreth by 297 votes, to win a full term.