| Election Name: | 1890 Pennsylvania gubernatorial election |
| Country: | Pennsylvania |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1886 Pennsylvania gubernatorial election |
| Previous Year: | 1886 |
| Next Election: | 1894 Pennsylvania gubernatorial election |
| Next Year: | 1894 |
| Image1: | RobertEPattison.png |
| Party1: | Democratic Party (United States) |
| Nominee1: | Robert E. Pattison |
| Popular Vote1: | 464,209 |
| Percentage1: | 50.0% |
| Nominee2: | George Delamater |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 447,655 |
| Percentage2: | 48.2% |
| Map Size: | 250px |
| Governor | |
| Before Election: | James A. Beaver |
| Before Party: | Republican Party (United States) |
| After Election: | Robert E. Pattison |
| After Party: | Democratic Party (United States) |
The 1890 Pennsylvania gubernatorial election occurred on November 4, 1890. Democratic candidate and former Governor Robert E. Pattison defeated Republican candidate George W. Delamater to become Governor of Pennsylvania.
As of the 2022 midterm elections, this is the last presidential, gubernatorial, or senatorial election in Pennsylvania where the Democratic candidate won the state without carrying Allegheny County. William A. Wallace and Chauncey Forward Black unsuccessfully sought the Democratic nomination.