Region Avia (Russian: Регион-Авиа), also styled Region-Avia or Region Avia Airlines, was a regional airline based in Moscow, Russia, operating scheduled passenger flights out of Domodedovo International Airport, and chartered services out of Bykovo Airport.

[1] Region Avia was registered in Moscow in 2005, as a company which was to 52% owned by (unnamed) Russian citizens and had an initial funding of $50 million.

[3] The last scheduled flight (from Tambov to Moscow) took place on 31 December 2010,[4] and the company was dissolved in early 2011.

[5] At its height in 2009, Region Avia operated scheduled services to the following domestic destinations:[1] Between 2007 and 2008, Region-Avia had offered flights from Yekaterinburg to Magnitogorsk, Ufa and Nyagan on behalf of Aviaprad.

[2] The Region Avia Airlines fleet included the following aircraft:[2] The company had plans to acquire a fleet of up to 50 foreign-made aircraft (either ATR 42, ATR 72 or Bombardier Dash 8) by 2012.