| Election Name: | 1975 Virginia Senate elections |
| Country: | Virginia |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 1971 Virginia Senate election |
| Previous Year: | 1971 |
| Election Date: | November 4, 1975 |
| Next Election: | 1979 Virginia Senate election |
| Next Year: | 1979 |
| Seats For Election: | All 40 seats in the Senate of Virginia |
| Majority Seats: | 21 |
| Leader1: | William B. Hopkins |
| Leader Since1: | January 4, 1972 |
| Party1: | Democratic Party (United States) |
| Leaders Seat1: | 21st |
| Last Election1: | 34 seats, 64.5% |
| Seats1: | 35 |
| Seat Change1: | 1 |
| Popular Vote1: | 588,993 |
| Percentage1: | 69.6% |
| Swing1: | 5.1 pp |
| Majority leader | |
| Before Election: | William B. Hopkins |
| Before Party: | Democratic Party (United States) |
| After Election: | Abe Brault |
| After Party: | Democratic Party (United States) |
| Leader2: | Robert S. Burruss Jr. |
| Party2: | Republican Party (United States) |
| Leader Since2: | November 21, 1972 |
| Leaders Seat2: | 23rd |
| Last Election2: | 6 seats, 31.6% |
| Seats2: | 5 |
| Seat Change2: | 1 |
| Popular Vote2: | 221,545 |
| Percentage2: | 26.2% |
| Swing2: | 5.4 pp |
| Map Size: | 300px |
The 1975 Virginia Senate elections were held on November 4, 1975, alongside the Virginia House of Delegates election. All 40 seats in the Senate of Virginia were up for election.[1]
| 35 | 5 | |
| Democratic | Republican |
| Parties | Seats | Popular Vote | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| align=center | 1971 | align=center | 1975 | align=center | +/- | align=center | Strength | align=center | Vote | align=center | % | align=center | Change | |||
| Democratic | align=right | 34 | align=right | 35 | align=right | 1 | align=right | 87.50% | align=right | 588,993 | align=right | 69.62% | align=right | 5.17% | ||
| Republican | align=right | 6 | align=right | 5 | align=right | 1 | align=right | 13.50% | align=right | 221,545 | align=right | 26.19% | align=right | 5.45% | ||
| Independent | align=right | 0 | align=right | 0 | align=right | align=right | 0.00% | align=right | 35,283 | align=right | 4.17% | align=right | 0.29% | |||
| - | Write-ins | align=right | 0 | align=right | 0 | align=right | align=right | 0.00% | align=right | 240 | align=right | 0.03% | align=right | 0.01% | ||
| align=center colspan="2" | Total | align=center | 40 | align=center | 40 | align=center | 0 | align=center | 100.00% | align=center | 846,061 | align=center | 100.00% | align=center | - |