| Election Name: | 1974 United States Senate election in Arizona |
| Country: | Arizona |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1968 United States Senate election in Arizona |
| Previous Year: | 1968 |
| Next Election: | 1980 United States Senate election in Arizona |
| Next Year: | 1980 |
| Election Date: | November 5, 1974 |
| Image1: | Senator Goldwater 1960.jpg |
| Nominee1: | Barry Goldwater |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 320,396 |
| Percentage1: | 58.26% |
| Nominee2: | Jonathan Marshall |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 229,523 |
| Percentage2: | 41.74% |
| Map Size: | 210px |
| U.S. Senator | |
| Before Election: | Barry Goldwater |
| Before Party: | Republican Party (United States) |
| After Election: | Barry Goldwater |
| After Party: | Republican Party (United States) |
The 1974 United States Senate election in Arizona took place on November 5, 1974. Incumbent Republican U.S. Senator Barry Goldwater decided to run for reelection to a second consecutive term, after returning to the U.S. Senate in 1968 following his failed Presidential run in 1964 against Lyndon B. Johnson. Goldwater defeated Democratic Party nominee philanthropist Jonathan Marshall in the general election.