A ria is a landform.
Ria or RIA may refer to:
People
- Ria (given name), a list of people
- Ria (singer), New Zealand 21st century singer
Business
Media
- Astro Ria, Malaysian pay-TV channel 104
- Ria 89.7FM, a Singaporean radio station
- RIA Novosti, a Russian state domestic news agency
- RIA, formerly Research Institute of America, an American publisher on tax and regulatory matters owned by Thomson Reuters
Other business uses
- RIA (restaurant), Chicago
- Ria Money Transfer, a remittances operator based in California
- Rock Island Armory, a former American military surplus and firearms seller
- Registered investment advisor, United States
Military
- Royal Irish Artillery, an Irish regiment of the British army
- Royal Italian Army, the army of the Kingdom of Italy
- Rock Island Arsenal, army base on the Mississippi River
Science
- Radioimmunoassay
- Rare Isotope Accelerator
- Research into Ageing
Technology
- RateItAll, a review website
- Rich Internet Application
- Railway Industry Association, a trade association in the United Kingdom
- Robotic Industries Association
Other uses
- Regulatory impact analysis, a document assessing the impact of a new government regulation
- Royal Irish Academy, an academic body
- IATA code of Santa Maria Airport (Rio Grande do Sul), Brazil
- RIA, station code of Rhoose Cardiff International Airport railway station, Wales
See also
- Riya, a feminine given name
- Rea (disambiguation)
- Rhea (disambiguation)
- R1A (disambiguation)
- Rio (disambiguation)
- Ríos (disambiguation)