Klin is a town in Moscow Oblast, Russia, located 85 km to the northwest of Moscow. The M10 highway connecting Moscow to St. Petersburg and the Moscow-Saint Petersburg Railway run through the town. It was home to Klin air base during the Cold War.

Klin is an air base in Russia located 4 km north of Klin. It is halfway between Moscow and Tver, with many military transport types (Il-76, An-12, An-26, Tu-134, etc) in service. The airfield was active until the 1990s.