Tioga is an unincorporated community in Mahaska County, in the U.S. state of Iowa.
Tioga was platted in 1886. It was named after Tioga, Tioga County, Pennsylvania. A post office opened in Tioga in 1886 and closed in 1920.
‡This populated place also has portions in an adjacent county or counties
Coordinates: 41°17′49″N 92°25′21″W / 41.29694°N 92.4225°W / 41.29694; -92.4225