Mark W. Michael Unit
 The Mark W. Michael Unit (MI) is a Texas Department of Criminal Justice men's prison located in unincorporated Anderson County Texas. The unit is along Farm to Market Road 2054 4 miles (6.4 km) south of Tennessee Colony. The unit on 20518 acres (8303 ha) of land is co-located with the Beto Coffield and Powledge prison units and the Gurney Transfer Unit.