The 14th Illinois General Assembly, consisting of the Illinois Senate and the Illinois House of Representatives, met from December 2, 1844, to March 3, 1845.
The 14th General Assembly was preceded by the 13th Illinois General Assembly, and was succeeded by the 15th Illinois General Assembly.

| Seats in District | Counties represented | Image | Representative | Remarks |
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| 1 | Lake | [[ ]] | ||
| 3 | Cook | [[ ]] | ||
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| 1 | Iroquois | [[ ]] | ||
| 1 | DuPage | [[ ]] | ||
| 2 | Will | [[ ]] | ||
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| 3 | Kane · McHenry · Boone · DeKalb | [[ ]] | ||
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| 3 | LaSalle | [[ ]] | ||
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| 1 | Peoria | [[ ]] | ||
| 1 | Stark · Bureau | [[ ]] | ||
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| 2 | Tazewell | [[ ]] | ||
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| 1 | Marshall · Putnam | [[ ]] | ||
| 1 | Stephenson · Carroll | [[ ]] | ||
| 1 | Jo Daviess | [[ ]] | ||
| 1 | Rock Island · Henry | [[ ]] | ||
| 1 | Whiteside · Lee | [[ ]] | ||
| 1 | Winnebago | [[ ]] | ||
| 1 | Ogle | [[ ]] | ||
| 1 | Schuyler | [[ ]] | ||
| 1 | Brown | [[ ]] | ||
| 1 | Brown · Schuyler | [[ ]] | ||
| 5 | Adams | William Hendry | ||
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| 2 | Hancock | [[ ]] | ||
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| 1 | McDonough | [[ ]] | ||
| 2 | Warren · Henderson | [[ ]] | ||
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| 1 | Knox | [[ ]] | ||
| 1 | Knox · Mercer | [[ ]] | ||
| 3 | Fulton | [[ ]] | ||
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| 1 | Fulton · Peoria | [[ ]] | ||
| 4 | Sangamon | [[ ]] | ||
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| 1 | Menard | [[ ]] | ||
| 1 | Logan · Mason | [[ ]] | ||
| 1 | McLean | [[ ]] | ||
| 1 | McLean · Livingston | [[ ]] | ||
| 1 | DeWitt | [[ ]] | ||
| 1 | Piatt · Macon | [[ ]] | ||
| 4 | Morgan | [[ ]] | ||
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| 3 | Pike | [[ ]] | ||
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| 1 | Cass | [[ ]] | ||
| 2 | Scott | [[ ]] | ||
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| 2 | Macoupin | [[ ]] | ||
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| 1 | Jersey | [[ ]] | ||
| 2 | Greene | [[ ]] | ||
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| 1 | Greene · Calhoun | [[ ]] | ||
| 3 | Madison | [[ ]] | ||
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| 3 | St. Clair | [[ ]] | ||
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| 3 | Monroe · Randolph | [[ ]] | ||
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| 1 | Bond | [[ ]] | ||
| 1 | Montgomery | [[ ]] | ||
| 1 | Christian | [[ ]] | ||
| 2 | Fayette · Effingham | [[ ]] | ||
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| 1 | Clay | [[ ]] | ||
| 1 | Shelby | [[ ]] | ||
| 1 | White | [[ ]] | ||
| 1 | Wabash | [[ ]] | ||
| 1 | Wayne | [[ ]] | ||
| 1 | Edwards | [[ ]] | ||
| 2 | Lawrence | [[ ]] | ||
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| 2 | Crawford · Jasper | [[ ]] | ||
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| 2 | Clark | [[ ]] | ||
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| 3 | Coles | [[ ]] | ||
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| 1 | Edgar | [[ ]] | ||
| 2 | Vermilion | [[ ]] | ||
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| 1 | Champaign | [[ ]] | ||
| 2 | Union · Alexander | [[ ]] | ||
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| 1 | Pope · Hardin | [[ ]] | ||
| 1 | Johnson | [[ ]] | ||
| 1 | Williamson | [[ ]] | ||
| 1 | Jackson | [[ ]] | ||
| 1 | Franklin | [[ ]] | ||
| 3 | Gallatin | [[ ]] | ||
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| 1 | Hamilton | [[ ]] | ||
| 1 | Hamilton · Jefferson · Marion | [[ ]] | ||
| 1 | Jefferson | [[ ]] | ||
| 1 | Marion | [[ ]] | ||
| 1 | Perry | [[ ]] | ||
| 2 | Clinton · Washington | [[ ]] | ||
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