| Election Name: | 1966 United States Senate election in New Mexico |
| Country: | New Mexico |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1960 United States Senate election in New Mexico |
| Previous Year: | 1960 |
| Next Election: | 1972 United States Senate election in New Mexico |
| Next Year: | 1972 |
| Election Date: | November 8, 1966 |
| Image1: | File:Clinton P. Anderson, 13th Secretary of Agriculture, June 1945 - May 1948. - Flickr - USDAgov.jpg |
| Nominee1: | Clinton Anderson |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 137,205 |
| Percentage1: | 53.14% |
| Nominee2: | Anderson Carter |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 120,988 |
| Percentage2: | 46.86% |
| Map Size: | 230px |
| U.S. Senator | |
| Before Election: | Clinton Anderson |
| Before Party: | Democratic Party (United States) |
| After Election: | Clinton Anderson |
| After Party: | Democratic Party (United States) |
The 1966 United States Senate election in New Mexico was held on November 8, 1966. Incumbent Democratic U.S. Senator Clinton Anderson won re-election to a fourth term. Democrats would not win this seat again until 2008.
Primary elections were held on May 3, 1966.