| Election Name: | 2006 Illinois House of Representatives election |
| Country: | Illinois |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2004 Illinois House of Representatives election |
| Previous Year: | 2004 |
| Next Election: | 2008 Illinois House of Representatives election |
| Next Year: | 2008 |
| Seats For Election: | All 118 seats in the Illinois House of Representatives |
| Majority Seats: | 60 |
| Leader1: | Michael Madigan |
| Party1: | Democratic Party (United States) |
| Leaders Seat1: | 22nd-Chicago |
| Last Election1: | 65 |
| Seats1: | 66 |
| Seat Change1: | 1 |
| Popular Vote1: | 1,701,735 |
| Percentage1: | 53.03% |
| Swing1: | 2.32% |
| Leader2: | Tom Cross |
| Party2: | Republican Party (United States) |
| Leaders Seat2: | 97th-Oswego |
| Last Election2: | 53 |
| Seats2: | 52 |
| Seat Change2: | 1 |
| Popular Vote2: | 1,454,770 |
| Percentage2: | 45.85% |
| Swing2: | 2.12% |
| Speaker | |
| Posttitle: | Speaker-Elect |
| Before Election: | Michael Madigan |
| Before Party: | Democratic Party (United States) |
| After Election: | Michael Madigan |
| After Party: | Democratic Party (United States) |
The Illinois House of Representatives elections of 2006 determined the membership of the lower house of the 95th General Assembly. The Democratic Party increased its Majority.
| Illinois State House of Representatives Elections, 2006 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Party | Votes | Percentage | Seats before | Number of Candidates | Seats after | +/– | ||
| Democratic | 1,701,735 | 53.64% | 65 | 91 | 66 | +1 | ||
| Republican | 1,454,770 | 45.85% | 53 | 84 | 52 | align="right" | -1 | |
| Green | 65,647 | 0.50% | 0 | 4 | 0 | 0 | ||
| Independent | 49 | 0.00% | 0 | 5 | 0 | 0 | ||
| Totals | 3,172,566 | 100.00% | 118 | 184 | 118 | 0 | ||