Ras

Ras or RAS may refer to:

Arts and media

 * RAS Records Real Authentic Sound, a reggae record label
 * Rundfunk Anstalt Südtirol, a south Tyrolese public broadcasting service
 * Rás 1, an Icelandic radio station
 * Rás 2, an Icelandic radio station
 * Raise A Suilen, a Japanese band

Organizations

 * Railway Air Services, a UK airline
 * Rajasthan Administrative Service, India
 * Remote Astronomical Society Observatory of New Mexico
 * Richard Allen Schools, a charter school system in Ohio, USA
 * Richardson Adventist School, now North Dallas Adventist Academy
 * IEEE Robotics and Automation Society
 * Royal Air Squadron, a flying club in the UK
 * Royal American Shows, an American travelling carnival company operating from the 1920s to the 1990s
 * Royal Asiatic Society of Great Britain and Ireland
 * Royal Astronomical Society, UK, founded 1820
 * Russian Academy of Sciences

Biology

 * RAAS, the renin–angiotensin system, a hormone system that regulates blood pressure
 * Recurrent aphthous stomatitis or canker sores
 * Renal artery stenosis, the narrowing of the renal arteries
 * Respiratory airway secretory cell, cells in humans and some other mammals that maintain airway health
 * Reticular activating system in the brain, regulating wakefulness
 * Retinoic acid syndrome, a complication of acute promyelocytic leukemia
 * Ras superfamily, a superfamily of signalling proteins
 * Ras subfamily, a family of signalling proteins

Science and technology

 * .ras, a SunOS raster format
 * RAS algorithm, an algorithm for iterative proportional fitting in economics
 * RAS supergroup or SAR supergroup, a plant clade
 * Recirculating aquaculture system, an aquarium system that filters water rather than requiring new water supplies
 * Registration, Admission and Status, a telephony protocol under H.323
 * Reliability, availability and serviceability of computer hardware
 * Remote access service, on a network
 * Reusable Asset Specification of software
 * Row Address Strobe in dynamic random-access memory
 * Russian Accounting Standards

People

 * Ras (surname), several people
 * Ras, the nickname for someone with the given name of Rasmus (given name)
 * Ra's al Ghul, a fictional villain in Batman media
 * Ras Muhamad (born 1982), Indonesian reggae singer
 * Nicholas Furlong (musician) or Ras
 * Rassius "Ras" Luine, a character from Tales of Eternia
 * Ras (Ninjago), character in Ninjago

Other uses

 * Ras (fascism), a title for a regional leader in Ethiopia under fascist Italy
 * Ras (title), an Ethiopian aristocratic and court title, as in Ras Tafari
 * Ras cheese, a variety popular in Egypt
 * RAS syndrome, "redundant acronym syndrome" syndrome
 * Rás Tailteann, an annual cycling race in Ireland
 * Stari Ras, a capital city of medieval Serbian state of Raška
 * Replenishment at sea, providing naval ships with supplies while at sea
 * Catepanate of Ras, province of the Byzantine Empire