| Election Name: | 1968 United States Senate election in Hawaii |
| Country: | Hawaii |
| Flag Year: | 1956 |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1962 United States Senate election in Hawaii |
| Previous Year: | 1962 |
| Next Election: | 1974 United States Senate election in Hawaii |
| Next Year: | 1974 |
| Election Date: | November 5, 1968 |
| Nominee1: | Daniel Inouye |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 189,248 |
| Percentage1: | 83.40% |
| Nominee2: | Wayne Thiessen |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 34,008 |
| Percentage2: | 14.99% |
| Map Size: | 300px |
| U.S. Senator | |
| Before Election: | Daniel Inouye |
| Before Party: | Democratic Party (US) |
| After Election: | Daniel Inouye |
| After Party: | Democratic Party (US) |
The 1968 United States Senate election in Hawaii took place on November 5, 1968. Incumbent Democratic U.S. Senator Daniel Inouye was re-elected to a second term in office, easily defeating Republican nominee Wayne Thiessen.