| Election Name: | 1968 United States Senate election in Arkansas |
| Country: | Arkansas |
| Flag Year: | 1924 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1962 United States Senate election in Arkansas |
| Previous Year: | 1962 |
| Next Election: | 1974 United States Senate election in Arkansas |
| Next Year: | 1974 |
| Election Date: | November 5, 1968 |
| Image1: | File:Senator J. William Fulbright 1966 (cropped).tif |
| Nominee1: | J. William Fulbright |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 349,965 |
| Percentage1: | 59.15% |
| Nominee2: | Charles T. Bernard |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 241,731 |
| Percentage2: | 40.85% |
| Map Size: | 200px |
| U.S. Senator | |
| Before Election: | J. William Fulbright |
| Before Party: | Democratic Party (US) |
| After Election: | J. William Fulbright |
| After Party: | Democratic Party (US) |
The 1968 United States Senate election in Arkansas was held on November 5, 1968.
Incumbent Democratic Senator J. William Fulbright was re-elected to a fifth term, defeating Democratic and Republican challengers.
The primary was held on July 30.