| Election Name: | 1974 United States Senate election in Illinois |
| Country: | Illinois |
| Flag Year: | 1956 |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1970 United States Senate special election in Illinois |
| Previous Year: | 1970 (special) |
| Next Election: | 1980 United States Senate election in Illinois |
| Next Year: | 1980 |
| Election Date: | November 5, 1974 |
| Image1: | File:Adlai III (3x4) (cropped less).jpg |
| Nominee1: | Adlai Stevenson III |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,811,496 |
| Percentage1: | 62.15% |
| Nominee2: | George Burditt |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 1,084,884 |
| Percentage2: | 37.22% |
| Map Size: | x300px |
| U.S. Senator | |
| Before Election: | Adlai Stevenson III |
| Before Party: | Democratic Party (United States) |
| After Election: | Adlai Stevenson III |
| After Party: | Democratic Party (United States) |
| Turnout: | 49.35% |
The 1974 United States Senate election in Illinois took place on November 5, 1974.[1] Incumbent Democratic U.S. Senator Adlai Stevenson III, who was first elected in a special election in 1970, was re-elected to a full term in office, defeating Republican George Burditt by a landslide margin of nearly 800,000 votes (62%-37%).
The primaries (held March 19) and general elections coincided with those for House and those for state offices.[1]
Turnout in the primary elections was 24.88%, with a total of 1,502,852 votes cast.[1]
Turnout during the general election was 49.35%, with 2,914,666 votes cast.[1]