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 may also refer to:
Places
Canada
- Delta, British Columbia
- Delta (federal electoral district), a federal electoral district
- Delta (provincial electoral district)
- Delta, Ontario
United States
- Mississippi Delta
- Arkansas 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 elements
- Delta Megazord, a Megazord in Power Rangers in Space
- Deltas, a working class in Aldous Huxley's Brave New World
Film and television
- Delta (2008 film), Hungary
- 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), 2003, Delta Goodrem
- Delta (Delta Goodrem album), 2007
- Delta (Visions of Atlantis album), 2011
- Delta (Mumford & Sons album), 2018
- Delta, by Shapeshifter, 2013
Other media
- Delta (magazine), a poetry magazine
- Delta (science magazine)
- Delta (video game), 1987
- Delta FM or Delta Radio, a former UK radio station
Businesses and organizations
Companies
- Delta Air Lines, U.S.
- 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
- Delta Computer, a defunct computer company
- 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
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 professional wrestler
Science, technology, and mathematics
- The upper- and lower-case Greek 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
- Delta convention, for designating allenes
- Δ is used to specify certain 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 debugger
Earth sciences
- Epicentral distance (Δ)
- Subtropical Storm Delta (1972), Atlantic
- Tropical Storm Delta (2005), Atlantic
- Hurricane Delta (2020), Atlantic
Mathematics
- Δ, a difference of state between two before and after state schemas in the Z notation
- , 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 (δ function)
- Kronecker delta ()
- Laplace operator (Δ)
- Modular discriminant (Δ)
- Symmetric difference (Δ)
- Non-inferiority margin (δ)
- Δm
n, 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), Old World genus of potter wasps
- 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 (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
- Delta baryon, a subatomic particle
- Delta circuit, in three-phase electric power
- Delta robot, a delta-shaped parallel robot
- Ilford Delta, a photographic film
- DELTA, Depleted Lean-channel Transistor, the first FinFET transistor type
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 Finnish former 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
See also
- The Delta (disambiguation)
- Delta model, a strategic management model
- Nabla symbol (), an inverted delta representing del, a vector differential operator
- Kronecker delta (), a function
- Dirac delta (), a function
- , represents a triangle defined by points A, B and C
- (ε, δ)-definition of limit
- (%CH), a percentage change operation found on some calculators
- , a classification in the arithmetical hierarchy
- , a classification in the analytical hierarchy
- , a classification in the polynomial hierarchy
- δ13C, a measure of the ratio of stable isotopes 13C:12C
- δ15N, a measure of the ratio of stable isotopes 15N:14N
- δ18O, a measure of the ratio of stable isotopes oxygen-18:oxygen-16
- DeltaWing, a prototype of racing car
- High-leg delta, a three phase electrical circuit
- Delta Delta Delta, a sorority
- Delta function (disambiguation)
- Task Force Delta (disambiguation)
- Delta Force (disambiguation)
- Delta class (disambiguation)
- Delta 1 (disambiguation)
- Delta 4 (disambiguation)
- All pages with titles beginning with Delta
- All pages with titles containing Delta
- All pages with titles beginning with Δ and δ
- All pages with titles containing Δ and δ
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