Southern Wisconsin Regional Airport (IATA: JVL, ICAO: KJVL, FAA LID: JVL) is a public airport located southwest of Janesville and north of Beloit in Rock County, Wisconsin, United States. Formerly known as Rock County Airport, it is owned and operated by the Rock County government. The airport has no scheduled commercial passenger service.

It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2021–2025, in which it is categorized as a national general aviation facility.