| Shimek State Forest | |
| Map: | USA Iowa#USA |
| Location: | Van Buren and Lee, Iowa, United States |
| Coordinates: | 40.6339°N -91.6811°W |
| Area Acre: | 9148 |
| Elevation: | 700feet |
| Established: | 1930s |
| Named For: | Bohumil Shimek |
| Governing Body: | Iowa Department of Natural Resources |
| Website: | Shimek State Forest |
Shimek State Forest is an Iowa state forest maintained by the Iowa Department of Natural Resources. Its five units are strung along the Des Moines River a few miles above its confluence with the Upper Mississippi River in Lee and Van Buren Counties in the southeast corner of Iowa. Its 9148acres contain one of the largest remaining contiguous forests in the state with large stands of mixed oak-hickory forest with about 1,000 acres (4 km²) of planted pine.
The Farmington (2207acres), Lick Creek (2866acres), Donnellson (1330acres) and Croton (1827acres) units are near Farmington, where the Iowa Bureau of Forestry administrative office is located. The Keosauqua (918acres) unit is upriver, opposite Keosauqua and adjoins Lacey-Keosauqua State Park and wildlife management areas. The Croton unit is near the site of the Battle of Athens, the most northerly battle of the Civil War, and the only one fought (in part) in Iowa.
The forest has extensive recreational facilities. Campgrounds, fishing, hunting, hiking trails, horseback riding trails and equine facilities are offered.
Its earliest development was by the Civilian Conservation Corps on exhausted, abandoned farmland. In 1950 it was named for Dr. Bohumil Shimek, a Czech-American naturalist, conservationist, and university professor at the State University of Iowa.