| Election Name: | 1908 Massachusetts Senate elections |
| Flag Year: | 1908 |
| Popular Vote2: | 175,085 |
| Seats2: | 6 |
| Seat Change2: | 3 |
| Party2: | Democratic Party (United States) |
| Popular Vote1: | 294,676 |
| Seats1: | 34 |
| Seat Change1: | 3 |
| Party1: | Republican Party (United States) |
| Election Date: | November 4, 1908 |
| Country: | Massachusetts |
| Majority Seats: | 21 |
| Seats For Election: | All 40 seats in the Massachusetts Senate |
| Next Year: | 1909 |
| Next Election: | 1909 Massachusetts Senate elections |
| Previous Year: | 1907 |
| Previous Election: | 1907 Massachusetts Senate elections |
| Ongoing: | no |
| Type: | legislative |
| Percentage1: | 60.6% |
| Percentage2: | 36.0% |
Elections to the Massachusetts Senate were held on November 4, 1908 to elect 40 State Senators to the 130th Massachusetts General Court. Candidates were elected at the district level, with many districts covering multiple towns or counties.
| Parties | Seats | Popular vote | ||||
|---|---|---|---|---|---|---|
| 1908 | Strength | Vote | % | |||
| Republican Party | 34 | 85.0% | 294,676 | 60.6% | ||
| Democratic Party | 6 | 15.0% | 175,085 | 36.0% | ||
| Independence League | — | — | 10,795 | 2.2% | ||
| Socialist Party | — | — | 5,035 | 1.0% | ||
| Prohibition Party | — | — | 547 | 0.1% | ||
| Independent | — | — | 468 | 0.1% | ||
| Others | — | — | 47 | 0.0% | ||
| Totals | 40 | 100.0% | 486,653 | 100.0% | ||
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This district contained the city of Springfield.
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This district contained Wards 5 through 11 of Cambridge.
This district contained the city of Somerville.
This district contained the cities of Everett, Malden, and Melrose.
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This district contained Wards 2–5 of Boston and Wards 1-3 of Cambridge.
This district contained Wards 6–8 of Boston and Ward 4 of Cambridge.
This district contained Wards 9, 12, and 17 of Boston.
This district contained Wards 10, 11, and 25 of Boston.
This district contained Wards 13 through 16 of Boston.
This district contained Wards 18, 19, and 22 of Boston.
This district contained Wards 20 and 21 of Boston.
This district contained Wards 23 and 24 of Boston.
This district contained Wards 4 through 10 of Worcester.
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