| Election Name: | 1964 United States Senate election in Missouri |
| Country: | Missouri |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1958 United States Senate election in Missouri |
| Previous Year: | 1958 |
| Next Election: | 1970 United States Senate election in Missouri |
| Next Year: | 1970 |
| Election Date: | November 3, 1964 |
| Nominee1: | Stuart Symington |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,186,666 |
| Percentage1: | 66.55% |
| Nominee2: | Jean Paul Bradshaw |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 596,377 |
| Percentage2: | 33.45% |
| Map Size: | 275px |
| U.S. Senator | |
| Before Election: | Stuart Symington |
| Before Party: | Democratic Party (United States) |
| After Election: | Stuart Symington |
| After Party: | Democratic Party (United States) |
The 1964 United States Senate election in Missouri took place on November 3, 1964. Incumbent Democratic U.S. Senator Stuart Symington was re-elected to a third term in office over Republican Jean Paul Bradshaw.