| Election Name: | 1913 United States Senate election in Massachusetts |
| Country: | Massachusetts |
| Flag Year: | 1908 |
| Type: | presidential |
| Ongoing: | no |
| Vote Type: | Members' |
| Election Date: | January 14, 1913 |
| Seats For Election: | Needed to Win: Majority of the votes cast in each house |
| Previous Election: | 1907 United States Senate election in Massachusetts |
| Previous Year: | 1907 |
| Next Election: | 1918 United States Senate election in Massachusetts |
| Next Year: | 1918 |
| Image1: | John Wingate Weeks, Bain bw photo portrait.jpg |
| Nominee1: | John W. Weeks |
| Party1: | Republican Party (US) |
| Popular Vote1: | 160 |
| Percentage1: | 58.82% |
| Party2: | Democratic Party (US) |
| Popular Vote2: | 80 |
| Percentage2: | 29.41% |
| U.S. Senator | |
| Before Party: | Republican Party (US) |
| After Party: | Republican Party (US) |
The 1913 United States Senate election in Massachusetts was held during January 1913. Incumbent Republican Senator Winthrop Crane retired and was succeeded by Republican John Wingate Weeks.
At the time, Massachusetts elected United States senators by a majority vote of the combined houses of the Massachusetts General Court.
After winning the caucus nomination on the thirty-first ballot, Weeks's support was made unanimous by acclamation on a motion by McCall supporter Claude L. Allen. The motion was seconded by Guild supporter John L. Sherburne.