| Election Name: | 1968 United States Senate election in Wisconsin |
| Country: | Wisconsin |
| Flag Year: | 1913 |
| Type: | presidential |
| Ongoing: | Yes |
| Previous Election: | 1962 United States Senate election in Wisconsin |
| Previous Year: | 1962 |
| Next Election: | 1974 United States Senate election in Wisconsin |
| Next Year: | 1974 |
| Election Date: | November 5, 1968 |
| Image1: | File:GaylordNelson.jpg |
| Nominee1: | Gaylord Nelson |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,020,931 |
| Percentage1: | 61.69% |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 633,910 |
| Percentage2: | 38.31% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Party: | Democratic Party (US) |
| After Party: | Democratic Party (US) |
In the United States Senate election in Wisconsin in 1968, incumbent Democrat Gaylord A. Nelson defeated Republican Jerris Leonard