Delta commonly refers to: * Delta (letter) (Δ or δ), a letter of the Greek alphabet * River delta, at a river mouth * D (NATO phonetic alphabet: "Delta") * Delta Air Lines, US * Delta variant of SARS-CoV-2 that causes COVID-19 Delta may also refer to:

Places

Canada

* Delta, British Columbia ** Delta (electoral district), a federal electoral district ** Delta (provincial electoral district) * Delta, Ontario

United States

* Mississippi Delta * Delta, Alabama * Delta Junction, Alaska * Delta, Colorado * Delta, Illinois * Delta, Iowa * Delta, Kentucky * Delta, Louisiana * Delta, Missouri * Delta, North Carolina * Delta, Ohio * Delta, Pennsylvania * Sacramento–San Joaquin River Delta, California * Delta, Utah * Delta, Wisconsin, a town * Delta (community), Wisconsin * Delta County (disambiguation)

Elsewhere

* Delta Island, Antarctica * Delta Stream, Antarctica * Delta, Minas Gerais, Brazil * Nile Delta, Egypt * Delta, Thessaloniki, Greece * Delta State, Nigeria * Delta, Astrakhan Oblast, Russia * Colonia Delta, Uruguay

Arts and entertainment

Fictional characters

* Delta Megazord, a zord in ''Power Rangers in Space'' * Deltas, a working class in Aldous Huxley's ''Brave New World''

Film and television

* Delta (2008 film), ''Delta'' (2008 film), Hungary * Delta (American TV series), ''Delta'' (American TV series), 1992 * Delta (Australian TV series), 1969 * ''Macross Delta'' or Macross Δ, in the ''Macross'' anime series

Music

* alt-J (∆), British indie band * Delta blues, a music style * "Delta", a song by Crosby, Stills & Nash from ''Daylight Again'', 1982

Albums

* Delta (video album), ''Delta'' (video album), 2003, Delta Goodrem * Delta (Delta Goodrem album), ''Delta'' (Delta Goodrem album), 2007 * Delta (Visions of Atlantis album), ''Delta'' (Visions of Atlantis album), 2011 * Delta (Mumford & Sons album), ''Delta'' (Mumford & Sons album), 2018 * ''Delta'', by Shapeshifter (band), Shapeshifter, 2013

Other media

* Delta (magazine), ''Delta'' (magazine), a poetry magazine * Delta (science magazine), ''Delta'' (science magazine) * Delta (video game), ''Delta'' (video game), 1987 * Delta FM or Delta Radio, a former UK radio station

Businesses and organizations

Companies

* Delta Air Lines, US ** Delta Connection, a Delta Air Lines brand * Delta Bank, Ukraine * Delta Cafés, a Portuguese coffee company * Delta Electric Company * Delta Electricity, Australia * Delta Electronics, Taiwan * Delta Faucet Company * Delta Holding, a Serbian corporation * Delta Hotels, Canada * Delta Machinery, a tool company * Delta Motor Corporation, South Africa * Former Delta Motors Corporation, Philippines * DELTA (Dutch cable operator)

Schools

* Delta State (disambiguation), several universities * Delta College (disambiguation) * Delta Academy (disambiguation) * Delta Secondary School (disambiguation) * Delta High School (disambiguation) * Delta School District (disambiguation) * Delta Career Education Corporation, US * Delta International University of New Orleans, Louisiana, US * Delta Schools, Riyadh, Saudi Arabia

Law enforcement

* Delta (Norwegian police unit)

Military

* Delta Force, U.S. Army special operations * Space Force Delta, US Space Force logo * Delta, a command echelon in the structure of the United States Space Force

Other organizations

* STC Delta, a Georgian R&D center * American Delta Party, an American political party * San Francisco Deltas, a soccer team * Delta Omicron, a music fraternity

Finance

* Delta (finance), rate of change of a value * Visa Delta or Visa Debit, a debit card

People

* Δ, signature of David Macbeth Moir (1798–1851), Scottish physician and writer * Delta Burke (born 1956), American actress * Delta Goodrem (born 1984), Australian singer * Delta Work, drag queen * Penelope Delta (1874–1941), Greek author * Delta (wrestler) (born 1985), Mexican

Science, technology, and mathematics

* The upper- and lower-case Greek letter Delta (letter), delta (Δ, δ) are used in many fields to denote a difference in some parameter

Chemistry

* Δ (delta), right-handed isomer in a Coordination complex#Optical isomerism, coordination complex *Allene#Delta convention, Delta convention, for designating allenes * Δ is used to specify certain Fatty acid#Carbon atom numbering, fatty acids

Computing

* Delta (computer), a Russian ZX Spectrum clone * Delta encoding or delta compression, in computer communications * Delta timing, in relation to hardware and network responsiveness * DELTA, an OpenVMS#Programming, OpenVMS debugger

Earth sciences

* Epicentral distance (Δ) * Subtropical Storm Delta (1972), Atlantic * Tropical Storm Delta (2005), Atlantic * Hurricane Delta, Hurricane Delta (2020), Atlantic

Mathematics

* Δ, a difference of state between two before and after state schemas in the Z notation *

\delta

, the first Feigenbaum constant * Delta connective, a unary connective in t-norm fuzzy logics * Delta method for approximating the distribution of a function * Difference operator (Δ) * Dirac delta function ( function) * Kronecker delta (

\delta_

) * Laplace operator (Δ) * Modular discriminant (Δ) * Symmetric difference (Δ) * Non-inferiority margin (δ) * Δ, a class of sets in the analytical hierarchy, for every natural number ''m'', ''n''

Medicine and biology

* Delta (ligand), an activator of the notch signaling pathway * DELTA (taxonomy), a data format for descriptions of living things * Delta (wasp), ''Delta'' (wasp), Old World genus of potter wasps * Delta (moth), ''Delta'' (moth) genus, also ''Campydelta'' *Delta variant of SARS-CoV-2 that causes COVID-19 * Delta wave, a brain wave

Vehicles

* Delta (rocket family) * Delta, a tricycle layout * Daihatsu Delta, trucks * Delta formation, V-shaped aircraft formation * Delta wing, a triangular aircraft wing * Delta-class submarine, ''Delta''-class submarine (NATO reporting name), Soviet/Russian SSBN * GM Delta platform, a car platform * Lancia Delta, an Italian rally car * Oldsmobile Delta 88, a GM 1965–1983 * TrikeBuggy Delta, an American ultralight trike

Other uses in science and technology

* Refractory delta, in the roof of an electric arc furnace * Delta, a quadra group used in socionics#Quadras, socionics * Delta baryon, a subatomic particle * Delta circuit, in Three-phase electric power#Delta (Δ), three-phase electric power * Delta robot, a delta-shaped parallel robot * Ilford Delta, a photographic film

Sport

* Delta (horse) (1946–1960), Australia * Mississippi Valley State Delta Devils and Devilettes, sports teams, Itta Bena, Mississippi, US * San Francisco Deltas, a soccer team * Delta (orienteering club), a former Finnish club

Other uses

* Delta Dental, an American system * Delta Works, a flood-protection works in the Netherlands * Delta, a font designed by Aldo Novarese * Diploma in Teaching English to Speakers of Other Languages