Dominican Republic, a country located on the eastern portion of the Caribbean island of Hispaniola

Diary room, in Big Brother

Designated Router, a concept used in routing protocol OSPF

Doctor (title), a person who has obtained a doctoral degree

Dr, an abbreviation for heavyweight diesel locomotive used by the Finnish VR Group

DragonRealms, a Massively-Multiplayer Online Role-Playing Game (MMORPG)

Douay-Rheims, a translation of the Bible

Danmarks Radio, a Danish public service radio and TV broadcaster

Jackson DR, a guitar by Jackson Guitars

Design Rational, the rational explanation for a design decision (or design process) in design research

Disaster recovery, a plan that covers the data, hardware and software critical for a business to restart operations in the event of a disaster

Digital radiography

Dead reckoning, the process of estimating a global position

Digital Research, a defunct software company

Dalereckoning, the fictional numbering of years in the Forgotten Realms

Driveway, a type of private road, often used in addresses

Diário da República, the Portuguese gazette

Daimler DR450, a limousine produced between 1961 and 1968

Deutsche Reichsbahn-Gesellschaft or Deutsche Reichsbahn of the GDR, two former railway companies in Germany

Dead Rising, a survival-horror videogame for the Xbox 360.

Medical Doctor, Dentist or a Physician, a person who holds a MBBS, BDS or DDS degree.