| I. L. Burch | |
| State Senate: | South Dakota |
| District: | 17th |
| Term Start: | 1891 |
| Term End: | 1892 |
| Predecessor: | Stiles H. Bronson |
| Successor: | John P. Ryan |
| Birth Date: | 9 October 1856 |
| Birth Place: | Nebraska, United States |
| Nationality: | American |
| Party: | None (independent) |
| Spouse: | Sarah Snodgrass |
| Children: | Seven |
| Residence: | Howard, South Dakota |
Irwin Leslie Burch (October 9, 1856 – February 23, 1939) was an American politician. He served in the South Dakota State Senate from 1891 to 1892.[1]