REA or Rea may refer to:

Places

* Rea, Lombardy, in Italy * Rea, Missouri, United States * River Rea, a river in Birmingham, England * River Rea, Shropshire, a river in Shropshire, England * Rea, Hungarian name of Reea village in Totești Commune, Hunedoara County, Romania

Acronyms

* Railway Express Agency (1918–1975), a defunct American package delivery service * Ralph Engelstad Arena, ice hockey venue at the University of North Dakota in Grand Forks, North Dakota * Reactive arthritis, inflammatory arthritis that develops in response to an infection in another part of the body * Reggio Emilia approach, an educational philosophy * Religious Education Association, American scholarly organization * Renewable Energy Association, British trade association * Research & Education Association, American publisher of test preparation materials and study guides * ''Resident Evil: Afterlife'' (2010), an American horror film * ''Resident Evil: Apocalypse'' (2004), am American horror film * Resources, Events, Agents, a theoretical model for computerized accounting * Rules Enabling Act (1934), US law empowering Federal courts to create "Rules of Civil Procedure" * Rural Electrification Administration (1932–1994), former name of the Rural Utilities Service, a US government agency * Restrictive Early Action, a type of early action in American college admissions * Rapid Equilibrium Assumption, a method for solving Stiff ODEs

Other

* Rea (name), including a list of people and characters with the name * Rea (album), ''Rea'' (album) * ''Mens rea'' (Latin for "guilty mind"), a legal term * Rea Award for the Short Story, an annual American and Canadian literary award * Rhea (bird), sometimes misspelled "rea" * Rea Magnet Wire, manufacturer of a broad range of magnet wire and other specialty wire * REA Group, the parent company of property website realestate.com.au {{Disambiguation, geo