| Election Name: | 1934 United States Senate election in Massachusetts |
| Country: | Massachusetts |
| Flag Year: | 1908 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1928 United States Senate election in Massachusetts |
| Previous Year: | 1928 |
| Next Election: | 1940 United States Senate election in Massachusetts |
| Next Year: | 1940 |
| Election Date: | November 6, 1934 |
| Image1: | David Ignatius Walsh.jpg |
| Nominee1: | David I. Walsh |
| Party1: | Democratic Party (US) |
| Popular Vote1: | 852,776 |
| Percentage1: | 59.39% |
| Nominee2: | Robert M. Washburn |
| Party2: | Republican Party (US) |
| Popular Vote2: | 536,692 |
| Percentage2: | 37.38% |
| Map Size: | 300px |
| Senator | |
| Before Election: | David I. Walsh |
| Before Party: | Democratic Party (US) |
| After Election: | David I. Walsh |
| After Party: | Democratic Party (US) |
The 1934 United States Senate election in Massachusetts was held on November 6, 1934. Democratic incumbent David I. Walsh was re-elected to a second consecutive term, the first Democrat ever to do so in the state, in a landslide over Republican Robert M. Washburn.