Portal may refer to: * Portal (architecture), a gate, door, or tunnel * Portal (fiction), a magical or technological doorway that connects two different locations in time or space

In entertainment: * Portal (interactive novel) (Portal (interactive novel)), a 1986 video game by Activision * Portal (video game) (Portal (video game)), a 2007 video game by Valve Corporation ** Portal 2, the sequel to the previously listed game * Portal (TV series) (Portal (TV series)), a series about MMORPGs

In geography: * Portal, California * Portal, Georgia * Portal, North Dakota

In music: * Portal (Australian band), a metal band from Australia * Portal (UK band), a band from the UK * Portals (album) (Portals (album)), an album by Arsonists Get All The Girls

In computing: * Enterprise portal, a framework to provide a single point of access to a variety of information and tools * Intranet portal, a gateway that unifies access to all enterprise information and applications * Portal rendering, an optimization technique in 3D computer graphics * Web portal, a site that functions as a point of access to information on the Internet * Portals network programming API (Portals network programming api), a high-performance networking programming interface for massively parallel supercomputers

In other uses: * Portal (comics), a Marvel comic character * Portal (Magic: The Gathering) (Portal (Magic: The Gathering)), a set in the Magic: The Gathering card game * Portal Software, a company based in Cupertino, California * Portals Athletic F.C., a defunct football club, based in Overton, England