Ra is the Sun-god of Ancient Egypt. Ra or RA may also refer to:

Arts and entertainment

Film and television

Ra (Stargate) Over its decade of existence, science fiction TV series ''Stargate SG-1'' developed an extensive and detailed backdrop of diverse characters. Many of the characters are members of alien species discovered while exploring the galaxy through the S ...

, 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

Gaming

* '' Rocket Arena'', a ''Quake'' mod * '' Command & Conquer: Red Alert'', a game

Music

* A half-step below Re on the

solfège In music, solfège (British English or American English , ) or solfeggio (; ), also called sol-fa, solfa, solfeo, among many names, is a mnemonic used in teaching aural skills, Pitch (music), pitch and sight-reading of Western classical music, W ...

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 Le Sony'r Ra (born Herman Poole Blount, May 22, 1914 – May 30, 1993), better known as Sun Ra, was an American jazz composer, bandleader, piano and synthesizer player, and poet known for his experimental music, "cosmic" philosophy, prolific ou ...

(1914–1993), American jazz musician and philosopher *

Rise Against Rise Against is an American punk rock band from Chicago, formed in 1999. The group's current line-up comprises vocalist/rhythm guitarist Tim McIlrath, lead guitarist Zach Blair, bassist Joe Principe and drummer Brandon Barnes. Rise Against's mu ...

, an American punk/hardcore band

Albums

* ''Ra'' (Utopia album), 1977 * ''Ra'' (Eloy album), 1988

Songs

* "Ra", a song by Northlane from ''

Node In general, a node is a localized swelling (a "knot") or a point of intersection (a vertex). Node may refer to: In mathematics * Vertex (graph theory), a vertex in a mathematical graph *Vertex (geometry), a point where two or more curves, lines ...

'', 2015 * Ra (Inna song), 2018

Other media

* ''Ra'', a novel by qntm *

Ra (board game) ''Ra'' is a board game for two to five players designed by Reiner Knizia and themed around Ra, the sun-god of Heliopolis in ancient Egyptian culture. It is one of three auction games designed by Knizia, the others being ''Medici'' and ''Moder ...

, a board game for two to five players designed by Reiner Knizia and based on ancient Egyptian culture * ''

Resident Advisor ''Resident Advisor'' (also known as ''RA'') is an online music magazine and community platform established in 2001 and dedicated to showcasing electronic music, artists and events across the globe. Its editorial team provides news, music and ev ...

'', an online magazine

Businesses and organizations

Academia

* Resource Academia, an academic institution in Lahore, Pakistan *

Roosevelt Academy University College Roosevelt (UCR), formerly known as Roosevelt Academy (RA), is a small, Honors colleges and programs, honors undergraduate liberal arts college, liberal arts and science college located in Middelburg, Zeeland, Middelburg in th ...

, a college in the Netherlands *

Royal Academy of Arts The Royal Academy of Arts (RA) is an art institution based in Burlington House in Piccadilly London, England. Founded in 1768, it has a unique position as an independent, privately funded institution led by eminent artists and architects. Its ...

, in London, UK **

Royal Academician The Royal Academy of Arts (RA) is an art institution based in Burlington House in Piccadilly London, England. Founded in 1768, it has a unique position as an independent, privately funded institution led by eminent artists and architects. Its ...

, one of the 80 practicing artists elected as a member of the Royal Academy *

Resident assistant A resident assistant (RA), also known by a variety of other names, is a trained peer leader who coordinates activities in residence halls in colleges and universities, mental health and substance abuse residential facilities, or similar establish ...

, a student leader

Government, military, and political organizations

Rainbow Alliance (Liberia) The Rainbow Alliance (RA) is a political alliance in Liberia. Its current constituent parties are the Victory for Change Party, True Whig Party, and Democratic Justice Party. History By June 2020, twelve political parties had signed a declaration ...

, a political alliance in Liberia *

Regular Army A regular army is the official army of a state or country (the official armed forces), contrasting with irregular forces, such as volunteer irregular militias, private armies, mercenaries, etc. A regular army usually has the following: * a ...

, the permanent force of an army that is maintained during peacetime *

Regulatory affairs Regulatory affairs (RA), is a profession that deals with an organization’s adherence to regulatory compliance. It is a position mostly found within regulated industries, such as pharmaceuticals, medical devices, cosmetics, agrochemicals (plant ...

, a department in charge of industry-government relations *

Provisional Irish Republican Army The Provisional Irish Republican Army (Provisional IRA), officially known as the Irish Republican Army (IRA; ) and informally known as the Provos, was an Irish republican paramilitary force that sought to end British rule in Northern Ireland ...

, Irish Nationalist paramilitary group active during The Troubles *

Resettlement Administration The Resettlement Administration (RA) was a New Deal U.S. federal agency created May 1, 1935. It relocated struggling urban and rural families to communities planned by the federal government. On September 1, 1937, it was succeeded by the Farm S ...

, a New Deal government program in the United States *

Royal Artillery The Royal Regiment of Artillery, commonly referred to as the Royal Artillery (RA) and colloquially known as "The Gunners", is one of two regiments that make up the artillery arm of the British Army. The Royal Regiment of Artillery comprises t ...

, a regiment of the British Army

Other businesses and organizations

* Ramblers' Association, a UK organisation for walkers *

Registration authority Registration authorities (RAs) exist for many standards organizations, such as ISO, the Object Management Group, W3C, and others. In general, registration authorities all perform a similar function, in promoting the use of a particular standard ...

, a body which maintains lists of international standards codes *

Rowing Australia Rowing Australia (RA) is the governing body for the sport of rowing in Australia. Established in 1925, it is the only organisation recognised by the Federation Internationale des Societies d’Aviron (FISA), the Australian Sports Commission ...

, governing body for the sport of rowing in Australia *

Road America Road America is a motorsport Road racing, road course located near Elkhart Lake, Wisconsin on Wisconsin Highway 67. It has hosted races since the 1950s and currently hosts races in the IndyCar Series, IMSA SportsCar Championship, Sports Car Club ...

, which uses the logo "RA"; a racetrack in Wisconsin, USA *

Nepal Airlines Nepal Airlines Corporation (), formerly known as Royal Nepal Airlines (), is the flag carrier of Nepal. Founded in 1958, it is the oldest airline of the country. Out of its main base at Tribhuvan International Airport, Kathmandu, the airline ope ...

(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 Resh is the twentieth Letter (alphabet), letter of the Semitic abjads, including Phoenician alphabet, Phoenician ''rēš'' 𐤓, Hebrew alphabet, Hebrew ''rēš'' , Aramaic alphabet, Aramaic ''rēš'' 𐡓‎, Syriac alphabet, Syriac ''rēš'' � ...

or ''rāʾ'', 10th letter of Arabic alphabet * Ռ or ''ṙa'', the 28th letter in the

Armenian alphabet The Armenian alphabet (, or , ) or, more broadly, the Armenian script, is an alphabetic writing system developed for Armenian and occasionally used to write other languages. It is one of the three historical alphabets of the South Caucasu ...

* र, ड़', ढ़, and र्ह,

Devanagari Devanagari ( ; in script: , , ) is an Indic script used in the Indian subcontinent. It is a left-to-right abugida (a type of segmental Writing systems#Segmental systems: alphabets, writing system), based on the ancient ''Brāhmī script, Brā ...

letters which can be called ''ra'', ''ṛa'' or ''rha'' * Ԗ, the 23rd letter ''rha'' («ра») in the older (1924−1927)

Moksha language Moksha (, ) is a Mordvinic languages, Mordvinic language of the Uralic languages, Uralic family, spoken by Mokshas, with around 130,000 native speakers in 2010. Moksha is the majority language in the western part of Mordovia. Its closest relativ ...

Cyrillic script * ர and ற,

Tamil Tamil may refer to: People, culture and language * Tamils, an ethno-linguistic group native to India, Sri Lanka, and some other parts of Asia **Sri Lankan Tamils, Tamil people native to Sri Lanka ** Myanmar or Burmese Tamils, Tamil people of Ind ...

letters articulated as ''ra'', ''tra'' or ''dra'' depending on the consonant complex

Places

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

, license plate code * Ra (island) (or ''Rah''), a small island of Vanuatu *

Ra Province Ra is one of the fourteen provinces of Fiji. Occupying the northern area of Viti Levu, the largest island, it is one of eight Viti Levu-based Provinces. With a land area of 1,341 square kilometers, it had a population of 30,432 in 2017 census. T ...

in Fiji ** Ra (Fijian Communal Constituency, Fiji) ** Ra (Open Constituency, Fiji) * Republic of Armenia *

Rawlins County, Kansas Rawlins County is a county located in the U.S. state of Kansas. Its county seat and largest city is Atwood. As of the 2020 census, the county population was 2,561. It was named after John Rawlins, a general in the American Civil War. His ...

, 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 Māori or Maori can refer to: Relating to the Māori people * Māori people of New Zealand, or members of that group * Māori language, the language of the Māori people of New Zealand * Māori culture * Cook Islanders, the Māori people of the Co ...

word for the Sun that is also used in other

Polynesian languages The Polynesian languages form a genealogical group of languages, itself part of the Oceanic branch of the Austronesian family. There are 38 Polynesian languages, representing 7 percent of the 522 Oceanic languages, and 3 percent of the Austr ...

. * 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 Retinoic acid (simplified nomenclature for all-''trans''-retinoic acid) is a metabolite of vitamin A1 (all-''trans''-retinol) that is required for embryonic development, male fertility, regulation of bone growth and immune function. All-''trans ...

, a metabolite of vitamin A *

Retrograde amnesia In neurology, retrograde amnesia (RA) is the inability to access memories or information from before an injury or disease occurred. RA differs from a similar condition called anterograde amnesia (AA), which is the inability to form new memories f ...

, a form of amnesia *

Rheumatoid arthritis Rheumatoid arthritis (RA) is a long-term autoimmune disorder that primarily affects synovial joint, joints. It typically results in warm, swollen, and painful joints. Pain and stiffness often worsen following rest. Most commonly, the wrist and h ...

, a chronic, systemic inflammatory disorder that attacks synovial joints * Refractory anemia, an expression of myelodysplasia

Computing

* .ra, the file extension for

RealAudio RealAudio, also spelled Real Audio, is a proprietary audio format developed by RealNetworks and first released in April 1995. It uses a variety of audio codecs, ranging from low-bitrate formats that can be used over dialup modems, to high-fidelit ...

files * Registration authority, in

public key cryptography Public-key cryptography, or asymmetric cryptography, is the field of cryptographic systems that use pairs of related keys. Each key pair consists of a public key and a corresponding private key. Key pairs are generated with cryptographic al ...

* RemoteAccess, a BBS software program * Route Advertisement, in networking, part of the

Neighbor Discovery Protocol The Neighbor Discovery Protocol (NDP), or simply Neighbor Discovery (ND), is a protocol of the Internet protocol suite used with Internet Protocol Version 6 (IPv6). It operates at the internet layer of the Internet model, and is responsible for ...

Transportation

* SJ Ra, a Swedish locomotive *

Radar altimeter A radar altimeter (RA), also called a radio altimeter (RALT), electronic altimeter, reflection altimeter, or low-range radio altimeter (LRRA), measures altitude above the terrain presently beneath an aircraft or spacecraft by timing how long it t ...

, an instrument on aircraft * Resolution Advisory, an aircraft instruction from a

Traffic Collision Avoidance System A traffic alert and collision avoidance system (TCAS), pronounced ), also known as an Airborne Collision Avoidance System (ACAS), is an aircraft collision avoidance system designed to reduce the incidence of mid-air collision (MAC) between aircraf ...

Other uses in science and technology

R_a

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 A color rendering index (CRI) is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with a natural or standard light source. ''Color rendering'', as defined by the Internat ...

(

R_a

), a measure of the ability of a light source to reveal the colors of objects faithfully *

Radium Radium is a chemical element; it has chemical symbol, symbol Ra and atomic number 88. It is the sixth element in alkaline earth metal, group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, ...

, symbol Ra, a chemical element *

Rain Rain is a form of precipitation where water drop (liquid), droplets that have condensation, condensed from Water vapor#In Earth's atmosphere, atmospheric water vapor fall under gravity. Rain is a major component of the water cycle and is res ...

(METAR weather code RA) *

Rayleigh number In fluid mechanics, the Rayleigh number (, after Lord Rayleigh) for a fluid is a dimensionless number associated with buoyancy-driven flow, also known as free (or natural) convection. It characterises the fluid's flow regime: a value in a certa ...

, in physics *

Relation algebra In mathematics and abstract algebra, a relation algebra is a residuated Boolean algebra expanded with an involution called converse, a unary operation. The motivating example of a relation algebra is the algebra 2''X'' 2 of all binary re ...

, a type of mathematical structure *

Right ascension Right ascension (abbreviated RA; symbol ) is the angular distance of a particular point measured eastward along the celestial equator from the Sun at the equinox (celestial coordinates), March equinox to the (hour circle of the) point in questio ...

, in astronomy *

Risk analysis In simple terms, risk is the possibility of something bad happening. Risk involves uncertainty about the effects/implications of an activity with respect to something that humans value (such as health, well-being, wealth, property or the environ ...

, 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 Professional requirements for architects vary from place to place, but usually consist of three elements: a university degree or advanced education, a period of internship or training in an office, and examination for registration with a jurisdict ...

, as a post-nominal suffix *

Relationship anarchy Relationship anarchy (sometimes abbreviated RA) is the application of anarchist principles to intimate relationships. Its values include autonomy, anti-hierarchical practices, anti-normativity, and community interdependence. RA is explicitly ant ...

, the practice of building human relationships in non-hierarchical ways, based on individual agreements rather than cultural norms. *

Remittance advice Remittance advice is a letter sent by a customer to a supplier to inform the supplier that their invoice has been paid. If the customer is paying by cheque, the remittance advice often accompanies the cheque. The advice may consist of a literal l ...

, a letter sent by a customer to a supplier, to inform the supplier that their invoice has been paid *

Research assistant A research assistant (RA) is a researcher employed, often on a temporary contract, by a university, research institute, or privately held organization to provide assistance in academic or private research endeavors. Research assistants work under ...

, in academia *

, in college housing *

Republic Act This article contains a partial list of Philippine laws. Sources of Philippine laws ;Notes : *Customs may be considered as supplementary source of law, however, customs which are contrary to law, public order or public policy shall not ...

, 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