| Election Name: | 1944 United States Senate election in Illinois |
| Country: | Illinois |
| Flag Year: | 1915 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1938 United States Senate election in Illinois |
| Previous Year: | 1938 |
| Next Election: | 1950 United States Senate election in Illinois |
| Next Year: | 1950 |
| Election Date: | November 7, 1944 |
| Image1: | ScottWikeLucas (1).jpg |
| Nominee1: | Scott W. Lucas |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 2,059,023 |
| Percentage1: | 52.61% |
| Nominee2: | Richard J. Lyons |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 1,841,793 |
| Percentage2: | 47.06% |
| Map Size: | 300px |
| Senator | |
| Before Election: | Scott W. Lucas |
| Before Party: | Democratic Party (United States) |
| After Election: | Scott W. Lucas |
| After Party: | Democratic Party (United States) |
The 1944 United States Senate election in Illinois was held on November 7, 1944[1] to elect one of Illinois's members to the United States Senate. Incumbent Democratic U.S. Senator Scott W. Lucas won reelection to a second term.
The race between Lucas and Republican Richard J. Lyons was a rematch of their 1938 United States Senate race six years prior.
The primaries and general election coincided with those for federal offices (President and House) and state elections.
Primaries were held on April 11.[1]