'''RDA''' may refer to: {{TOC right}} ==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 {{disambiguation}}