Ina is the southern-most village in Jefferson County, Illinois, United States. The population was 2,455 as of the 2000 census. It is part of the Mount Vernon Micropolitan Statistical Area.
Ina is located at 38°9′2″N 88°54′17″W / 38.15056°N 88.90472°W / 38.15056; -88.90472 (38.150648, -88.904709).
According to the United States Census Bureau, the village has a total area of 2.4 square miles (6.2 km²), all of it land.