Magic Valley Regional Airport (IATA: TWF, ICAO: KTWF, FAA LID: TWF), also known as Joslin Field, is a public use airport located four nautical miles (7 km) south of the central business district of Twin Falls, Idaho. The airport is owned by the City and County of Twin Falls. It is mostly used for general aviation but is also served by one commercial airline.

As per the Federal Aviation Administration, this airport had 29,606 passenger boardings (enplanements) in calendar year 2008, 26,991 in 2009, and 35,576 in 2010. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.