Arts, entertainment and media
* ''L'Expansion'', a French monthly business magazine * Expansion (album), ''Expansion'' (album), by American jazz pianist Dave Burrell, released in 2004 * Expansions (McCoy Tyner album), ''Expansions'' (McCoy Tyner album), 1970 * Expansions (Lonnie Liston Smith album), ''Expansions'' (Lonnie Liston Smith album), 1975 * Expansión (Mexico), ''Expansión'' (Mexico), a Mexican news portal linked to CNN * Expansion (sculpture) (2004) Bronze sculpture illuminated from within * Expansión (Spanish newspaper), ''Expansión'' (Spanish newspaper), a Spanish economic daily newspaper published in Spain * Expansion pack in gaming, extra content for games, often simply "expansion"Science, technology, and mathematics
* Expansion (geometry), stretching of geometric objects with flat sides * Expansion (model theory), in mathematical logic, a mutual converse of a reduct * Expansion card, in computing, a printed circuit board that can be inserted into an expansion slot * Expansion chamber, on a two-stroke engine, a tuned exhaust system that enhances power output * Expansion joint, an assembly that absorbs heat-induced expansion and contraction of construction materials * Joule–Thomson effect or Joule–Thomson expansion, the decrease in temperature of a gas when it expands * Thermal expansion, the tendency of matter to change in shape, area, and volume in response to a change in temperature * Expansion of the universe, the increase of the distance between two distant parts of the universe with timeEconomics
* Expansion (economics), an increase in the market value of an economy over timeSport
* Expansion team, a new team in a sports leagueOther uses
* MV ''Expansion'', a former name of American cargo linerSee also
* * * Expansion chamber (disambiguation) * Elasticity (disambiguation) * Expansionism, a policy of enlarging territory or economic influence * Stretching {{disambiguation es:Expansión