| Election Name: | 1970 United States Senate election in Massachusetts |
| Country: | Massachusetts |
| Flag Year: | 1908 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 United States Senate election in Massachusetts |
| Previous Year: | 1964 |
| Next Election: | 1976 United States Senate election in Massachusetts |
| Next Year: | 1976 |
| Election Date: | November 3, 1970 |
| Image1: | File:Ted Kennedy in New York.jpg |
| Nominee1: | Ted Kennedy |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,202,856 |
| Percentage1: | 62.16% |
| Nominee2: | Josiah Spaulding |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 715,978 |
| Percentage2: | 37.00% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Ted Kennedy |
| Before Party: | Democratic Party (United States) |
| After Election: | Ted Kennedy |
| After Party: | Democratic Party (United States) |
The 1970 United States Senate election in Massachusetts was held on November 3, 1970. The incumbent Democratic Senator Ted Kennedy defeated his challengers. This was Kennedy's first election run since the 1969 Chappaquiddick incident.Kennedy won 62.2% of the vote, down from the 74.3% that he won in the previous election in 1964, indicating that Chappaquiddick did affect his popularity.
This was the last election in which Ted Kennedy lost any Massachusetts county. Spaulding carried Barnstable, Dukes, Franklin, and Nantucket Counties.