| Election Name: | 2004 Michigan House of Representatives election |
| Country: | Michigan |
| Type: | legislative |
| Previous Election: | 2002 Michigan House of Representatives election |
| Previous Year: | 2002 |
| Next Election: | 2006 Michigan House of Representatives election |
| Next Year: | 2006 |
| Seats For Election: | All 110 seats in the Michigan House of Representatives |
| Majority Seats: | 56 |
| Leader1: | Craig DeRoche |
| Party1: | Michigan Republican Party |
| Leaders Seat1: | 38th District |
| Last Election1: | 63 |
| Seats After1: | 58 |
| Seat Change1: | 5 |
| Popular Vote1: | 2,201,727 |
| Percentage1: | 48.23% |
| Leader2: | Dianne Byrum |
| Party2: | Michigan Democratic Party |
| Leaders Seat2: | 67th District |
| Last Election2: | 47 |
| Seats After2: | 52 |
| Seat Change2: | 5 |
| Popular Vote2: | 2,326,710 |
| Percentage2: | 50.97% |
| Map Size: | 350px |
| Before Election: | Rick Johnson |
| Before Party: | Michigan Republican Party |
| After Election: | Craig DeRoche |
| After Party: | Michigan Republican Party |
The 2004 Michigan House of Representatives elections were held on November 2, 2004, with partisan primaries to select the parties' nominees in the various districts on August 3, 2004.[1]
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