| Election Name: | 1976 United States Senate election in Indiana |
| Country: | Indiana |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1970 United States Senate election in Indiana |
| Previous Year: | 1970 |
| Next Election: | 1982 United States Senate election in Indiana |
| Next Year: | 1982 |
| Election Date: | November 2, 1976 |
| Image1: | Richard Lugar 1977 congressional photo.jpg |
| Nominee1: | Richard Lugar |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 1,275,833 |
| Percentage1: | 59.03% |
| Nominee2: | Vance Hartke |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 868,522 |
| Percentage2: | 40.19% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Vance Hartke |
| Before Party: | Democratic Party (United States) |
| After Election: | Richard Lugar |
| After Party: | Republican Party (United States) |
The 1976 United States Senate election in Indiana took place on November 2, 1976. Incumbent Democratic U.S. Senator Vance Hartke ran for re-election to a fourth term, but was defeated by Republican challenger Richard Lugar.