did

DID or did may mean:

• Damsel in distress, a classic theme in world literature, art and film
• Data Item Descriptions, describing the content of sections in a file or document
• Defeat in detail, a military term in which a large force decisively defeats a smaller force with minimal losses
• Defense in depth, either
  • Defense in depth, a military strategy for defense
  • Defense in depth (computing), an information assurance strategy
• Développement International Desjardins, a subsidiary of the Quebec-based Desjardins Group active in developing countries
• Didcot Parkway railway station, a railway station in England (National Rail station code DID)
• Difference in differences, an approach for statistical estimation of treatment effects
• Digital Image Design, a video game developer

• Direct Inward Dialing, in telephony
• Dissociative identity disorder, a psychiatric diagnosis sometimes known as "multiple personality disorder"
• Ouchterlony double immunodiffusion
• Dance India Dance, a reality dance show on Zee TV, first aired in 2009
• Desert Island Discs, a long-running BBC Radio 4 programme, presented since 2006 by Kirsty Young
• Dialogue in the Dark (DiD), an awareness-raising exhibition
• did, past tense of the English verb do

DID steht als Abkürzung für:

• Direct Inward Dialling, siehe Durchwahl
• Deutsche Immobilien Datenbank GmbH, welche den Deutschen Immobilien Index erstellt
• Deutsches Institut Druck
• Digital Image Design, ein britischer Spielehersteller
• Düsseldorfer Institut für Dienstleistungsmanagement

DDI (ang. Direct Dial-In (Europa) lub Direct Inward Dialing (USA) to nazwa usługi w centralach telefonicznych PBX polegająca na tym, że można zadzwonić bezpośrednio na numer abonenta wewnętrznego.