The 1958 United States Senate elections in Alaska were held November 25, 1958. The elections were held in anticipation of Alaska's admission as the forty-ninth state in the union, effective January 3, 1959. The state held two simultaneous elections to determine their first senators.
Both elections were won by the Democratic Party. The new senators, Bob Bartlett and Ernest Gruening, were sworn into office alongside those senators elected in the 1958 United States Senate elections held three weeks earlier.
| Election Name: | 1958 class 2 Senate election |
| Election Date: | November 25, 1958 |
| Country: | Alaska |
| Type: | presidential |
| Ongoing: | no |
| Next Election: | 1960 United States Senate election in Alaska |
| Next Year: | 1960 |
| Image1: | File:E.L. Bob Bartlett Official Portrait (cropped).jpg |
| Nominee1: | Bob Bartlett |
| Party1: | Democratic Party (US) |
| Popular Vote1: | 40,939 |
| Percentage1: | 83.83% |
| Party2: | Republican Party (US) |
| Popular Vote2: | 7,299 |
| Percentage2: | 14.95% |
| Map Size: | 350px |
| U.S. Senator | |
| After Party: | Democratic Party (US) |
This election was for the class 2 term expiring in 1961. It was won by Democrat Bob Bartlett.
Delegate Bartlett was unopposed for the Democratic nomination.
Robertson was unopposed for the Republican nomination.
| Election Name: | 1958 class 3 Senate election |
| Election Date: | November 25, 1958 |
| Country: | Alaska |
| Type: | presidential |
| Ongoing: | no |
| Next Election: | 1962 United States Senate election in Alaska |
| Next Year: | 1962 |
| Image1: | Senator Ernest Gruening (D-AK) (croppedmore) (cropped).jpg |
| Nominee1: | Ernest Gruening |
| Party1: | Democratic Party (US) |
| Popular Vote1: | 26,045 |
| Percentage1: | 52.61% |
| Party2: | Republican Party (US) |
| Popular Vote2: | 23,464 |
| Percentage2: | 47.39% |
| Map Size: | 350px |
| U.S. Senator | |
| After Party: | Democratic Party (US) |
This election was for the class 3 term expiring in 1963. It was won by Democrat Ernest Gruening.