Jacksonville Museum was a museum in Jacksonville, Oregon, United States, located in the former Jackson County Courthouse, built in 1883. The courhouse is a contributing property of the Jacksonville Historic District, which is listed on the National Register of Historic Places (NRHP). The museum is owned by the Southern Oregon Historical Society, which also owns several other historic properties in Jacksonville. The museum in the courthouse closed in 2006 due to lack of funding. The Southern Oregon Historical Society still operates Hanley Farm in Central Point and a Research Library in Medford.
The current Jackson County Courthouse, also listed on the NRHP, is in Medford.