List of lieutenant governors of Illinois Lieutenant Governors of Illinois Lieutenant Governors of Illinois

| Lt_Governor | Commission_Date | End_Date | Governor | Party | Term |
|---|---|---|---|---|---|
| Barratt O`Hara | February 3, 1913 | January 8, 1917 | Edward F. Dunne | Democratic | 1913–1917 |
| John G. Oglesby | January 8, 1917 | January 10, 1921 | Frank O. Lowden | Republican | 1917–1921 |
| Fred Sterling | January 10, 1921 | January 14, 1929 | Len Small | Republican | 1921–1929 |
| Fred Sterling | January 14, 1929 | January 9, 1933 | Louis L. Emmerson | Republican | 1929–1933 |
| Thomas Donovan | January 9, 1933 | January 4, 1937 | Henry Horner | Democratic | 1933–1940 |
| John H. Stelle | January 4, 1937 | October 6, 1940 succeeded Horner | Henry Horner | Democratic | 1933–1940 |
| Office vacant | October 6, 1940 | January 13, 1941 | John H. Stelle | Democratic | 1940–1941 |
| Hugh W. Cross | January 13, 1941 | January 10, 1949 | Dwight H. Green | Republican | 1941–1949 |