Ra is the Sun-god of Ancient Egypt.

Ra or RA may also refer to:

Arts and entertainment

Film and television

  • Ra (Stargate), a character from the film Stargate, based on the Egyptian god
  • Ra (1972 film), a 1972 documentary film about Thor Heyerdahl's expeditions
  • Ra (2014 film), a Tamil fantasy film

Music

  • A half-step below Re on the solfège musical scale

Performers

  • Ra (band), an American rock band
  • Ra (musician), the pseudonym of Raoul Sinier, a French digital painter and electronic musician
  • R.A. the Rugged Man (born c. 1974), American rapper
  • Sun Ra (1914–1993), American jazz musician and philosopher
  • Rise Against, an American punk/hardcore band

Albums

  • Ra (Utopia album), 1977
  • Ra (Eloy album), 1988

Songs

  • "Ra", a song by Northlane from Node, 2015
  • Ra (Inna song), 2018

Other media

  • Ra (novel), a 2013 novel by Sam Hughes under the pseudonym qntm
  • Ra (board game), a board game for two to five players designed by Reiner Knizia and based on ancient Egyptian culture
  • Resident Advisor, an online magazine
  • Command & Conquer: Red Alert, a game

Businesses and organizations

Academia

  • Resource Academia, an academic institution in Lahore, Pakistan
  • Roosevelt Academy, a college in the Netherlands
  • Royal Academy of Arts, in London, UK
  • Royal Academician, one of the 80 practicing artists elected as a member of the Royal Academy
  • Resident assistant, a student leader

Government, military, and political organizations

  • Rainbow Alliance (Liberia), a political alliance in Liberia
  • Rear admiral, a senior naval rank
  • Regular Army, the permanent force of an army that is maintained during peacetime
  • Regulatory affairs, a department in charge of industry-government relations
  • Provisional Irish Republican Army, Irish Nationalist paramilitary group active during The Troubles
  • Resettlement Administration, a New Deal government program in the United States
  • Royal Artillery, a regiment of the British Army

Other businesses and organizations

  • Ramblers' Association, a UK organisation for walkers
  • Registration authority, a body which maintains lists of international standards codes
  • Rowing Australia, governing body for the sport of rowing in Australia
  • Road America, which uses the logo "RA"; a racetrack in Wisconsin, USA
  • Nepal Airlines (IATA code RA)

Linguistics

  • Ra (Javanese) (ꦫ), a letter in the Javanese script
  • Ra (kana), the Japanese kana ら and ラ
  • ረ and ራ, Amharic letters that can be read as variations of ra, also related to the Semitic resh
  • Resh or rāʾ, 10th letter of Arabic alphabet
  • Ռ or ṙa, the 28th letter in the Armenian alphabet
  • र, ड़', ढ़, and र्ह, Devanagari letters which can be called ra, ṛa or rha
  • Ԗ, the 23rd letter rha («ра») in the older (1924−1927) Moksha language Cyrillic script
  • ர and ற, Tamil letters articulated as ra, tra or dra depending on the consonant complex

Places

  • Argentina, license plate code
  • Ra (island) (or Rah), a small island of Vanuatu
  • Ra Province in Fiji
  • Ra (Fijian Communal Constituency, Fiji)
  • Ra (Open Constituency, Fiji)
  • Republic of Armenia
  • Rawlins County, Kansas, of which the largest city is Atwood

Religion and mythology

  • Ra, the Sun-god of Ancient Egypt
  • Rå, a creature in Scandinavian mythology
  • Rā, a Māori word for the Sun that is also used in other Polynesian languages
  • Roua or Ra, a Polynesian deity
  • Tama-nui-te-rā, a Maori Sun-god
  • Radeyallāhu ′Anhu, an Islamic honorific

Science and technology

Biology and medicine

  • Retinoic acid, a metabolite of vitamin A
  • Retrograde amnesia, a form of amnesia
  • Rheumatoid arthritis, a chronic, systemic inflammatory disorder that attacks synovial joints
  • Refractory anemia, an expression of myelodysplasia

Computing

  • .ra, the file extension for RealAudio files
  • Registration authority, in public key cryptography
  • RemoteAccess, a BBS software program
  • Route Advertisement, in networking, part of the Neighbor Discovery Protocol

Transportation

  • SJ Ra, a Swedish locomotive
  • Radar altimeter, an instrument on aircraft
  • Resolution Advisory, an aircraft instruction from a Traffic Collision Avoidance System

Other uses in science and technology

  • <math>R_a</math> or Ra, a popular parameter of roughness, defined as the average of absolute values of deviation from the mean of a surface
  • Color rendering index (<math>R_a</math>), a measure of the ability of a light source to reveal the colors of objects faithfully
  • Radium, symbol Ra, a chemical element
  • Rain (METAR weather code RA)
  • Rayleigh number, in physics
  • Relation algebra, a type of mathematical structure
  • Right ascension, in astronomy
  • Risk analysis, in several fields
  • Resource adequacy, in electrical power grids

People with the surname

  • Armen Ra, Iranian-born American musician
  • Aron Ra, American author, podcaster, and atheist activist
  • Ed Ra (born 1981), American politician

Other uses

  • Ra I and Ra II, reed boats used by Thor Heyerdahl's transatlantic expeditions
  • Registered Architect, as a post-nominal suffix
  • Relationship anarchy, the practice of building human relationships in non-hierarchical ways, based on individual agreements rather than cultural norms.
  • Remittance advice, a letter sent by a customer to a supplier, to inform the supplier that their invoice has been paid
  • Research assistant, in academia
  • Republic Act, Philippine laws from 1946 to 1972 and after 1987
  • One of several ISO 217 standard paper sizes
  • "Ra", a disc golf midrange disc by Infinite Discs

See also

  • RAH (disambiguation)
  • RHA (disambiguation)
  • Ras (disambiguation)
  • Re (disambiguation)

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