Re or RE may refer to:

Arts, media and entertainment

* ''...Re'', a 2016 Indian Kannada-language film * ''Realencyclopädie der classischen Altertumswissenschaft'', a German encyclopedia of classical scholarship * ''Resident Evil'', a horror game franchise

Music

* Re, the second syllable of the scale in solfège ** D (musical note) or Re, the second note of the musical scale in ''fixed do'' solfège * Re: (band), a musical duo based in Canada and the US

Albums

* Re (Café Tacuba album), ''Re'' (Café Tacuba album) * Re (Les Rita Mitsouko album), ''Re'' (Les Rita Mitsouko album) * ''Re.'', by Aya Ueto * Re: (EP), ''Re:'' (EP), by Kard

Language

* re (interjection), ''re'' (interjection), in Greek * Re (kana) (れ and レ), Japanese syllables * ''In re'', Latin for 'in the matter of...' ** RE: and Re:, a standard List of email subject abbreviations#Standard prefixes, email subject line prefix

Organisations

* Renew Europe, a political group in the European Parliament * Renovación Española, a former Spanish monarchist political party * Royal Engineers, a part of the British Army * Royal Society of Painter-Printmakers, whose fellows may use the Post-nominal letters RE * Stobart Air (former IATA code: RE), a former Irish regional airline

Places

* Re, Norway, a former municipality in Vestfold county * Re, Vestland, a village in Gloppen municipality, Vestland county, Norway * Re, Piedmont, an Italian municipality * Île de Ré, an island off the west coast of France ** Le Bois-Plage-en-Ré, a commune on that island * Re di Anfo, a torrent (seasonal stream) in Italy * Re di Gianico, Re di Niardo, Re di Sellero, and Re di Tredenus, torrents in the Val Camonica, Lombardy, Italy * Réunion (ISO 3166-1 code), a French overseas department and island in the Indian Ocean

Science and technology

* Effective reproduction number, in epidemiology * Relative effectiveness or RE factor, of an explosive's demolition power * Reynolds number (), a dimensionless quantity in fluid mechanics used to help predict flow patterns * Rhenium (symbol Re), a chemical element * Reference pressure (Re), as sound pressure#Sound pressure level, sound pressure level * Reference pressure (Re), in underwater acoustics#Underwater hearing, underwater acoustics

Computing and mathematics

* RE (complexity) (recursively enumerable), a complexity class of decision problems ** Recursively enumerable (r.e.), in computability theory * Regular expression, a sequence of characters to match text against a specified pattern * Re function, in mathematics, where Re(''z'') denotes the real part of a complex number ''z'' * .re, the Internet country code top-level domain for Réunion

People

* Ré (futsal player), Portuguese futsal player * Andrea Re (born 1963), Italian rower * Cayetano Ré (1938–2013), Paraguayan footballer * Christopher Ré, American computer scientist * Davide Re, Italian runner * Germán Ré, Argentine footballer * Giovanni Battista Re (born 1934), Italian cardinal * Maximiliano Ré, Argentine-Italian footballer * Paul Ré, American artist and writer * Savannah Ré, Canadian singer-songwriter * Vincenzo Re, Italian scenic designer

Other uses

* Religious education (RE), the study of religion * Re (Egyptian religion), an ancient Egyptian god * Regional-Express, a type of regional train in Germany, Luxembourg and Austria