New Zealand Horizon, Saskatchewan, hamlet in Saskatchewan, Canada Rosemont Horizon, the former name of Allstate Arena, a multipurpose arena in Rosemont, Illinois, United States Horizon City, a town in Texas, United States Horizons (Epcot), a former Epcot Center attraction at Walt Disney World Schools École secondaire l'Horizon, a French public secondary school in Quebec, Canada Horizon High School (disambiguation) Horizon Science Academy, a group of charter schools which is owned by Concept Schools in Ohio, United States Science Computers and computer science Horizon effect, in artificial intelligence: the computational limit beyond which conventional game-tree search algorithms make suboptimal decisions Horizons: Software Starter Pack, a 1982 software compilation for the ZX Spectrum North Star Horizon, an 8-bit computer system based on the ZiLOG Z80A microprocessor Split horizon route advertisement, one of the methods in computer networks used to prevent routing loops VMware Horizon, a commercial desktop-virtualisation product released in 2014 (formerly called Horizon View) Nintendo Switch system software, internally known as Horizon Horizon, a social platform being built by Meta Platforms, encompassing Horizon Home, Horizon Worlds, Horizon Workrooms, Horizon Venues and Horizon Marketplace Horizon, computer accounting system used in connection with the British Post Office scandal Geology, soil science and archeology Horizon (archaeology), a distinctive sediment, artefact, style or other cultural trait that is found at archaeological sites across a large geographical area Horizon (geology), a bedding plane or a thin bed of distinctive character within a stratigraphic sequence Marker horizon, a distinctive stratigraphic unit, of the same age across several locations Soil horizon, a specific and distinctive layer in a land area Physics Horizon (general relativity), that play a role in Einstein's theory of general relativity Absolute horizon, a boundary in spacetime in general relativity inside of which events cannot affect an external observer Apparent horizon, a surface defined in general relativity Cauchy horizon, a surface found in the study of Cauchy problems Celestial horizon, a great circle parallel to the horizon Cosmological horizon, a limit of observability: the maximum distance from which particles can have travelled to an observer in the age of the universe Event horizon, a boundary in spacetime beyond which events cannot affect the observer JPL Horizons On-Line Ephemeris System, an interactive facility that computes the position of many solar system objects Killing horizon, a null surface on which there is a Killing vector field Radio horizon, the locus of points in telecommunication at which direct