Region (disambiguation)

• Regional Australia, a term used in Australia for populated regions outside of major cities

• RegionsAir, an airline based in the United States
• Regional airline, any airline that services a limited area, or any of several specific regional airlines, including
  • Régional (2001–2013), a defunct airline based in France
  • Regional Airlines (France) (?–2001), a defunct airline based in France
  • Regional Air (Papua New Guinea), an airline based in Papua New Guinea
  • Regional Air (Kenya) (2000–2005), a defunct airline based in Kenya
  • Regional Air (est. 1997), an airline based in Tanzania
  • Regional Express Airlines, an airline based in Australia
  • Regional 1 (airline) (2003–2019), an airline based in Canada
  • Regional Pacific Airlines, a defunct airline based in Australia

Regional is also the name of at least two rail lines:

• Regional Railways one of the three former passenger sectors of British Rail from 1981 to 1996
• Regional (Amtrak), a train line that runs between Massachusetts and Virginia

• Region (model checking), a convex polytope data structure
• Region-based memory management, a memory management technique in which allocations are organized into regions and all objects in a region can be deallocated at once
• In raster graphics, a region is a data structure used to represent an arbitrary set of pixels (in Apple QuickDraw) or series of shapes (Microsoft Windows Graphics Device Interface or X Window System) to be drawn on the screen
• In digital audio editing, a region is a reference to a portion of an audio file

• Region (mathematical analysis), a non-empty, open, connected set

• Regions Financial Corporation, a banking and financial services company headquartered in Birmingham, Alabama

• Region (administrative), a governmental subdivision of a nation
• Region (Europe), a political subdivision within the European Union

• Regional novel, see
  • American Literary Regionalism
  • British regional literature

• DVD region code
• Blu-ray Region code