RAA or Raa may refer to:

RAA

Ralph Appelbaum Associates Ralph Appelbaum Associates (RAA) is one of the world's longest-established and largest museum exhibition design firms with offices in New York City, London, Beijing, Berlin, Moscow, and Dubai.Bradford A. McKee, What's a Museum: What he says it i ...

, museum exhibition design firms * Ramos Arizpe Assembly, a General Motors automobile factory in Ramos Arizpe, Coahuila, Mexico * Reasoned action approach, a psychological theory to explain behavior * Reciprocal Access Agreement, a bilateral defense and security pact between Australia and Japan *

Recreation and Amusement Association The or RAA, was the largest of the organizations established by Japanese authorities to provide organized prostitution to prevent rapes and sexual violence by Allied occupation troops on the general population,Schrijvers, Peter (2002). The GI ...

, a system of brothels set up by the Japanese government for US occupation forces *

Recreational Aviation Australia Recreational Aviation Australia (abbreviated to RAAus), formerly known as the Australian Ultralight Federation (AUF), is the governing body for ultralights in Australia. RAAus registers ultralight aircraft and issues pilot certificates throug ...

, governing body for ultralights in Australia *

Reductio ad absurdum In logic, (Latin for "reduction to absurdity"), also known as (Latin for "argument to absurdity") or ''apagogical argument'', is the form of argument that attempts to establish a claim by showing that the opposite scenario would lead to absur ...

, a style of logical argument or formal rule inference *

Reeve Aleutian Airways Reeve Aleutian Airways was an airline headquartered in Anchorage, Alaska, Anchorage, Alaska, United States. It ceased operations on December 5, 2000. Reeve Aleutian was named, possibly as a pun on the word revolution, by combining founder Rober ...

, an airline headquartered in Anchorage, Alaska * Regional Airline Association * '' Requiem: Avenging Angel'', a 1999 first-person shooter video game *

Research on Armenian Architecture Research on Armenian Architecture (RAA) () is a non-governmental organization established in Aachen, Germany, in 1969 by Dr. Armen Hakhnazarian and was registered as a non-profit public organization in 1982. In 1996, RAA USA was founded, followe ...

Resource acquisition ability Resource acquisition ability (RAA) is a term in social psychology and the sexual opposite of the reproductive value (RV), introducing an unintentional mechanism used by women when selecting a male partner. The RAA is focused on some factors: * Gene ...

, a term in social psychology. *

Right atrial appendage The atrium (; : atria) is one of the two upper chambers in the heart that receives blood from the circulatory system. The blood in the atria is pumped into the heart ventricles through the atrioventricular mitral and tricuspid heart valves. ...

* Royal Artillery Association, an association of serving or former Royal Regiment of Artillery soldiers *

Royal Australian Artillery The Royal Regiment of Australian Artillery, normally referred to as the Royal Australian Artillery (RAA), is a Regiment of the Australian Army descended from the original colonial artillery units prior to Australia's federation. Australia's f ...

, a corps in the Australian Army *

Royal Automobile Association The Royal Automobile Association of South Australia (RAA) is an Australian motor club. It offers various services, including vehicle inspection, insurance and roadside assistance to members. The RAA operates its services on a break-even bas ...

, of South Australia, also known as RAA * Ruby Application Archive *

The Rural Alberta Advantage The Rural Alberta Advantage is a Canadian indie rock band that formed in 2005 in Toronto, Ontario. The band consists of Nils Edenloff on lead vocals and guitar; Amy Cole (Robin Hatch between September 2016 and January 2018) on keyboards, bass, an ...

, a Canadian indie band * , the

Swedish National Heritage Board The Swedish National Heritage Board (; RAÄ) is a Swedish government agency responsible for World Heritage Sites and other national heritage monuments and historical environments. It is governed by the Ministry of Culture. The goals of the agen ...

* Renin-angiotensin-aldosterone system, another name for the

renin–angiotensin system The renin–angiotensin system (RAS), or renin–angiotensin–aldosterone system (RAAS), is a hormone system that regulates blood pressure, fluid, and electrolyte balance, and systemic vascular resistance. When renal blood flow is reduced, ...

Raa

* , or , the personification of the sun in Māori mythology * ''Raa'' (film), a 2001 Indian Telugu-language film *

Raa (surname) Raa is a Nordic surname. Notable people with the surname include: *Hedvig Raa-Winterhjelm (1838–1907), Swedish actor * Jan Raa (born 1939), Norwegian biologist * Torolf Raa (born 1933), Norwegian diplomat See also *Raas (surname) Raas is a surna ...

Raa Atoll Raa Atoll (also known as Northern Maalhosmadulu Atoll or Maalhosmadulu Uthuruburi) is an administrative division of the Maldives. The capital is Ungoofaaru. It includes Northern Maalhosmadulu Atoll proper and the island of Dhuvaafaru. Raa Atoll ...

, an administrative division of the Maldives * Raa, the fourth consonant of the

Thaana Thaana, Tãna, Taana or Tāna ( ) is the present writing system of the Maldivian language spoken in the Maldives. Thaana has characteristics of both an abugida (diacritics, vowel-killer strokes) and a true alphabet (all vowels are w ...

abugida used in Dhivehi