Di or DI may refer to:

Arts and media

Music

* Di, a tone in the

solfège In music, solfège (, ) or solfeggio (; ), also called sol-fa, solfa, solfeo, among many names, is a music education method used to teach aural skills, pitch and sight-reading of Western music. Solfège is a form of solmization, though the tw ...

ascending chromatic scale existing between Do and Re *

dizi (instrument) The ''dizi'' (, pronounced ), is a Chinese transverse flute. It is also sometimes known as the ''di'' () or ''héngdi'' (), and has varieties including Qudi (), Bangdi (), and Xindi (). It is a major Chinese musical instrument that is widely u ...

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 DI.FM (formerly known as Digitally Imported) is an Internet radio broadcaster consisting of over 90 channels dedicated to electronic music, such as house, trance, techno, drum and bass, and dubstep. DI.FM broadcasts handpicked selections consist ...

, an internet radio service

Businesses and organisations

Defence Intelligence Defence Intelligence (DI) is an organisation within the United Kingdom intelligence community which focuses on gathering and analysing military intelligence. It differs from the UK's intelligence agencies (MI6, GCHQ and MI5) in that it is an ...

, a UK military intelligence agency * Defensa Interior, an anti-Franco militant anarchist group in 1960s Spain *

Deseret Industries Deseret Industries () (known locally as the DI) is a non-profit organization and a division of the welfare services provided by the Church of Jesus Christ of Latter-day Saints (LDS Church). DI thrift stores are similar to the well-known Goodwill I ...

, an LDS thrift store * Desert Inn, a former casino in Las Vegas *

Direction Italy Direction Italy ( it, Direzione Italia, DI) was a liberal-conservative political party in Italy. The party was led by Raffaele Fitto, an MEP in the European Conservatives and Reformists (ECR) group. History The party was formed in January 2017 ...

, a liberal-conservative political party in Italy *

Dirgantara Indonesia Indonesian Aerospace (IAe) ( id, PT Dirgantara Indonesia (Persero)), is an Indonesian aerospace company involved in aircraft design and the development and manufacture of civilian and military regional commuter aircraft. The company was formerly k ...

, an Indonesian aircraft company * Discovery Institute, an intelligent design advocacy group * Norwegian Air UK, a UK based airline (IATA designator) *

DynCorp International DynCorp (), formally DynCorp International, was an American private military contractor. Started as an aviation company, the company also provided flight operations support, training and mentoring, international development, intelligence training ...

, a major United States defense contractor

Education

Diplomi-insinööri Diplomi-insinööri (DI) ( sv, diplomingenjör) is a Finnish Master's level academic degree with a nominal length of 300 ECTS credits. The official English translation of the degree is Master of Science (Technology). The Finnish name derives from ...

, 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 Didymium ( el, , twin) is a mixture of the elements praseodymium and neodymium. It is used in safety glasses for glassblowing and blacksmithing, especially with a gas ( propane)-powered forge, where it provides a filter that selectively block ...

, a mixture of the elements praseodymium and neodymium once thought to be an element *

Diopside Diopside is a monoclinic pyroxene mineral with composition . It forms complete solid solution series with hedenbergite () and augite, and partial solid solutions with orthopyroxene and pigeonite. It forms variably colored, but typically dull ...

, 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, Distributor § Direct ignition * Direct injection, a type of fuel injection

Religion

* ''di'' (), a Chinese word employed in ** the temple names of List of rulers of China, 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), ''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, 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