Di or DI may refer to:
Arts and media Music Di, a tone in the solfège ascending chromatic scale existing between Do and Re dizi (instrument) or di, a Chinese transverse flute D.I. (band), a punk band from Southern California D.I. (EP), a 1983 EP by the same band above
Other media The D.I., 1957 military film by Jack Webb Dagens Industri, a Swedish financial newspaper DI.FM, an internet radio service
Businesses and organisations Defence Intelligence, a UK military intelligence agency Defensa Interior, an anti-Franco militant anarchist group in 1960s Spain Deseret Industries, an LDS thrift store Desert Inn, a former casino in Las Vegas Direction Italy, a liberal-conservative political party in Italy Dirgantara Indonesia, an Indonesian aircraft company Discovery Institute, an intelligent design advocacy group Marabu (airline) (IATA code: DI), an Estonian leisure airline Norwegian Air UK (former IATA code: DI), a former UK airline DBA (airline) (former IATA code: DI), a former German low-cost airline DynCorp International, a major United States defense contractor Myanmar Directorate of Defence Industries
Education Diplomi-insinööri, a Finnish 6-year engineering degree Direct instruction, an instructional method focused on a systematic curriculum design
Natural sciences Di, a prefix used in organic chemistry nomenclature Didymium, a mixture of the elements praseodymium and neodymium once thought to be an element Diopside, a clinopyroxene mineral Band 3, a protein Deionized water, a type of water deprived of the dissolved impurities of ionic nature Diabetes insipidus, a disease Iodothyronine deiodinase type I, one of a subfamily of enzymes important in the activation and deactivation of thyroid hormones Dentinogenesis imperfecta, a genetic disorder of tooth development
People Ethnic groups Di (Five Barbarians) (), an ethnic group that overran northern China during the Sixteen Kingdoms period Beidi or Northern Di (), ethnic groups living in northern China during the Zhou Dynasty
Individuals Di (surname) (狄), a Chinese surname sometimes also romanized Dee, particularly: Di Renjie a Tang-dynasty official later fictionalized in a series of Chinese detective stories A diminutive form of the names: Diana (given name) Diane (disambiguation) Dianne (disambiguation) Diana, Princess of Wales (1961–1997), commonly known as Princess Di or Lady Di
Technology Digital intermediate, a filmmaking post-production process Dependency injection, a method of decoupling components in software DI unit or Direct Input box, an audio device used with PA systems and in sound recording studios DI register, or destination index, in x86 computer architecture Direction indicator, an instrument in aviation also known as a heading indicator Direct ignition, see Distributor § Direct ignition Direct injection, a type of fuel injection
Religion di (), a Chinese word employed in the temple names of deified Chinese emperors Shangdi (Chinese: , lit. "Lord on High"), the Chinese name for the supreme sky god either in native Chinese beliefs or in translation of monotheistic faiths like Christianity and Islam di (Chinese concept) (), the concept of "earth" in traditional Chinese cosmologies di, an irregular Latin masculine plural of deus ("god", "deity")
Other uses Detective inspector (DI), a rank in certain police forces Di (cuneiform), an ancient written sign Diameter, the distance across the middle of a circle Di Department, one of the eight departments of the Sourou Province in Burkina Faso 501 (number) in Roman numerals Disability insurance, a form of insurance that insures the beneficiary's earned income against the risk that a disability will make working uncomfortable Hong Kong Document of Identity, issued by the Hong Kong Immigration Department Drill instructor, a non-commissioned officer in many military or police forces Differentiated integration, a mechanism for the European Union's countries to opt out of EU policies
See also Lady Di (disambiguation) Die (disambiguation)