RDA may refer to:
Laws Rules of Decision Act, 1789, United States Racial Discrimination Act 1975, Australia
Organisations Government bodies Rawalpindi Development Authority, Pakistan (founded 1989) Redevelopment agency, a type of municipal department in the United States responsible for urban renewal Regional development agency, a class of local body in England (1998–2010) Road Development Authority, Sri Lanka (founded 1971)
Other organisations Rassemblement Démocratique Africain (1946–1958), a political party in French West Africa Reader's Digest Association, an American publisher Research Data Alliance, a research community organisation started in 2013 Revolving Doors Agency, a British charity Riding for the Disabled Association, a British equestrian charity Rural Development Academy, an institution in Bangladesh
People Rafael dos Anjos (born 1984), Brazilian mixed martial artist Richard Dean Anderson (born 1950), American actor
Science, technology and mathematics Biology and medicine Recommended Dietary Allowance, one of several recommendations referred to as a Dietary Reference Intake Representational difference analysis, a technique used to find sequence differences in two genomic or cDNA samples Registered dental assistant Relative dentin abrasivity, a measure of toothpaste's effects on tooth dentin
Computing Remote Database Access, a protocol Robotic data automation, the automation of tasks Remote diagnostic agent, an Oracle database diagnostic tool
Other uses in science and mathematics Rebuildable Dripping Atomizer, where liquid is dripped directly onto a coil Redundancy analysis, a method for ordination in statistics Retro-Diels–Alder reaction (rDA), a chemical reaction Research and Development Array, a cosmic ray detector development project Research Data Australia, a web portal for access to national research data, within Australian Research Data Commons
Other uses Redland railway station, Bristol, England (CRS code: RDA) Resource Description and Access, a library cataloguing standard Resources Development Administration (RDA), a fictional megacorporation in the Avatar films Roshan Digital Account, a banking service for overseas Pakistanis