| Election Name: | 1964 United States Senate election in Nevada |
| Country: | Nevada |
| Flag Year: | 1929 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1958 United States Senate election in Nevada |
| Previous Year: | 1958 |
| Next Election: | 1970 United States Senate election in Nevada |
| Next Year: | 1970 |
| Election Date: | November 3, 1964 |
| Image1: | Howard Cannon.jpg |
| Nominee1: | Howard Cannon |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 67,336 |
| Percentage1: | 50.02% |
| Nominee2: | Paul Laxalt |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 67,288 |
| Percentage2: | 49.98% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Howard Cannon |
| Before Party: | Democratic Party (United States) |
| After Election: | Howard Cannon |
| After Party: | Democratic Party (United States) |
The 1964 United States Senate election in Nevada was held on November 3, 1964. Incumbent Democratic U.S. Senator Howard Cannon won re-election to a second term by a slim margin of only 48 votes. Howard Cannon defeated Paul Laxalt by a very narrow margin despite Lyndon Baines Johnson winning the state over Barry Goldwater in a landslide in the concurrent presidential election in Nevada.
To date, this remains the closest Senate race in US history since the passing of the 17th amendment in which the winner was seated as Senator.