RD

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Rd or RD may refer to:

Arts and entertainment

Film and television

• RD, a fictional character in the anime Zoids: Fuzors
• Rainbow Dash, a fictional character in the television show My Little Pony: Friendship is Magic
• Real Drive, an anime by Production I.G
• Red Dwarf, a British science fiction comedy franchise
• Reservoir Dogs, a 1992 American film written and directed by Quentin Tarantino

Gaming

• Radiant Dawn, a tactics, turn based strategy RPG for the Wii
• Radical Dreamers, a text-based role playing game on the Satellaview made in 1996
• Ratchet: Deadlocked, the fourth game in the Ratchet and Clank series
• Root Double: Before Crime * After Days, a 2012 visual novel video game

Music

• RD (group), a British girl group also known as Ruff Diamondz
• Radio Disney, a California-based radio network with music and other content targeted to young people
• Reasonable Doubt (album), rapper Jay-Z's debut album

Other media

• Reader's Digest, a popular general-interest magazine
• ReDent, identi.ca's term for reblogging
• RememberDestiny, a cosplay group from Belgium
• Rilindja Demokratike, an Albanian newspaper

Businesses and organizations

• Rassemblement démocrate, a political party in France
• USDA Rural Development, an agency of the United States Department of Agriculture
• Ryan International Airlines (IATA airline designator RD)

Geography

• Road
• Red Deer, Alberta, Canada

Military decorations

• Decoration for Officers of the Royal Naval Reserve, or Reserve Decoration, an award for service in the Royal Navy Reserve of the United Kingdom
• Emblem for Reserve Force Service, Reserve Decoration, or Reserve Force Distinction or Decoration, an award of the South African National Defense Force Military Reserve

People

• Rithvik Dhanjani, Indian television actor
• Rahul Dravid, former Indian cricket player
• Roald Dahl (1916–1990), British writer

Science, technology, and mathematics

Computing and mathematics

• rd, also called rmdir, a shell command meaning "remove directory"
• R^d, the mathematical domain of real numbers
• Rata Die, a calendar-independent system to assign numbers to calendar dates
• Route distinguisher, in data networking, a concept in Multiprotocol Label Switching
• Ruby Document format, a markup language used for documentation of Ruby programs

Health and medicine

• Reading disability, a condition resulting primarily from neurological factors
• Registered Dietitian, an expert in food and nutrition
• Retinal detachment, a disorder of the eye
• Risk difference, a term in epidemiology related to absolute risk reduction

Other uses in science and technology

• Rate–distortion optimization, a decision algorithm used in video compression
• Reaktivniy Dvigatel, a Soviet Russian prefix for an engine design series (literally, "reactive engine"; see RD-8 for example)
• Research and development
• Rocketdyne, a United States rocket engine company
• Round of ammunition
• Rutherford (unit), a unit of radioactivity

Other uses

• ‹rd›, a Latin alphabet digraph of a retroflex stop in Aboriginal Australian languages
• Dominican peso (currency symbol RD$)
• An English-language ordinal indicator, for ordinal numbers ending in "third" (e.g. 3rd, 23rd, 33rd)
• Repair Depot (e.g., 6 Repair Depot), in military use
• Resident Director, a common staff position at universities and colleges with on-campus housing
• Ritual Decalogue, a list called the "Ten Commandments" in Exodus 34 that deals mostly with imperatives of worship
• Rural Delivery, mail delivery in what are traditionally considered rural areas in the United States