| Election Name: | 1878 Pennsylvania gubernatorial election |
| Country: | Pennsylvania |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1875 Pennsylvania gubernatorial election |
| Previous Year: | 1875 |
| Next Election: | 1882 Pennsylvania gubernatorial election |
| Next Year: | 1882 |
| Image1: | Henry M. Hoyt - Brady-Handy.jpg |
| Party1: | Republican Party (United States) |
| Nominee1: | Henry M. Hoyt |
| Popular Vote1: | 319,567 |
| Percentage1: | 45.5% |
| Nominee2: | Andrew H. Dill |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 297,060 |
| Percentage2: | 42.3% |
| Nominee3: | Samuel R. Mason |
| Party3: | Greenback Party |
| Popular Vote3: | 81,758 |
| Percentage3: | 11.7% |
| Map Size: | 250px |
| Governor | |
| Before Election: | John F. Hartranft |
| Before Party: | Republican Party (United States) |
| After Election: | Henry M. Hoyt |
| After Party: | Republican Party (United States) |
The 1878 Pennsylvania gubernatorial election occurred on November 5, 1878. Incumbent governor John F. Hartranft, a Republican, was not a candidate for re-election.
The Republican candidate, Henry M. Hoyt, defeated Democratic candidate Andrew H. Dill and Greenback candidate Samuel R. Mason to become Governor of Pennsylvania.
This election extended the governor's term from three to four years.[1]