| Election Name: | 1976 United States Senate election in Maine |
| Country: | Maine |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1970 United States Senate election in Maine |
| Previous Year: | 1970 |
| Next Election: | 1982 United States Senate election in Maine |
| Next Year: | 1982 |
| Election Date: | November 2, 1976 |
| Image1: | Edmund Muskie.jpg |
| Nominee1: | Edmund Muskie |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 292,704 |
| Percentage1: | 60.20% |
| Nominee2: | Robert A. G. Monks |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 193,489 |
| Percentage2: | 39.80% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Edmund Muskie |
| Before Party: | Democratic Party (United States) |
| After Election: | Edmund Muskie |
| After Party: | Democratic Party (United States) |
The 1976 United States Senate election in Maine took place on November 2, 1976. Incumbent Democratic senator Edmund Muskie won re-election to a fourth term.