| Election Name: | 1970 United States Senate election in North Dakota |
| Country: | North Dakota |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1964 United States Senate election in North Dakota |
| Previous Year: | 1964 |
| Next Election: | 1976 United States Senate election in North Dakota |
| Next Year: | 1976 |
| Election Date: | November 3, 1970 |
| Image1: | Quentin Burdick.jpg |
| Nominee1: | Quentin Burdick |
| Party1: | North Dakota Democratic-NPL Party |
| Popular Vote1: | 134,519 |
| Percentage1: | 61.27% |
| Nominee2: | Thomas Kleppe |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 82,996 |
| Percentage2: | 37.80% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Quentin Burdick |
| Before Party: | Democratic Party (US) |
| After Election: | Quentin Burdick |
| After Party: | Democratic Party (US) |
The 1970 United States Senate election in North Dakota was held November 3, 1970. The incumbent, North Dakota Democratic NPL Party Senator Quentin Burdick, was re-elected to his third term, defeating Republican candidate Thomas S. Kleppe, who later became the United States Secretary of the Interior.[1]
Only Burdick filed as a Dem-NPLer, and the endorsed Republican candidate was Thomas S. Kleppe, who was finishing his second and final term as a Representative for North Dakota's second congressional district. Burdick and Kleppe won the primary elections for their respective parties.
One independent candidate, Russell Kleppe, also filed before the deadline.