Region is a term used by contemporary geographers to describe an area of land or water that is part of a larger whole.
Region or Regional may also refer to:
Geography Regional Australia, a term used in Australia for populated regions outside of major cities
Transportation 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 Rex Airlines, formerly Regional Express Airlines, an airline 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
Computer science 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
Mathematics and physics Region (mathematical analysis), a non-empty, open, connected set
Corporations Regions Financial Corporation, a banking and financial services company headquartered in Birmingham, Alabama
Politics Region (administrative), a governmental subdivision of a nation Region (Europe), a political subdivision within the European Union
Fiction Regional novel, see American Literary Regionalism British regional literature
Media DVD region code Blu-ray Region code