| Election Name: | 1970 United States Senate election in Pennsylvania |
| Country: | Pennsylvania |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 United States Senate election in Pennsylvania |
| Previous Year: | 1964 |
| Next Election: | 1976 United States Senate election in Pennsylvania |
| Next Year: | 1976 |
| Election Date: | November 3, 1970 |
| Image1: | SenHughScott.jpg |
| Nominee1: | Hugh Scott |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 1,874,106 |
| Percentage1: | 51.43% |
| Nominee2: | William Sesler |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 1,653,774 |
| Percentage2: | 45.38% |
| Map Size: | 260px |
| U.S. Senator | |
| Before Election: | Hugh Scott |
| Before Party: | Republican Party (United States) |
| After Election: | Hugh Scott |
| After Party: | Republican Party (United States) |
The 1970 United States Senate election in Pennsylvania was held on November 3, 1970. Incumbent Republican U.S. Senator Hugh Scott won re-election, defeating Democratic nominee William Sesler.