ARPA

Arpa or ARPA may refer to:

Given name

 * Arpa Ke'un (died 1336), Ilkhan during the disintegration of the Mongol state in Persia

Surname

 * José Arpa (1858–1952), Spanish artist who worked in Spain, Mexico, and Texas
 * Okay Arpa (born 1977), Turkish karateka
 * Yvan Arpa, Swiss watch designer

Geographical names

 * Areni, formerly Arpa, a village in Armenia
 * Arpi, Armenia, also known as Arpa, a town in Armenia
 * Arpa (river), in Armenia
 * Arpa (river), Chhattisgarh in Chhattisgarh, India
 * Akhurian River, Arpa in Turkish, river in Turkey and Armenia
 * Arpa Darreh, a village in Iran
 * Arpa Valley, a high-altitude valley in Kyrgyzstan

Music

 * Arpa d'Eolo, a musical instrument
 * Arpa jarocha, a Mexican harp used in conjunto jarocho music
 * Rinaldo dall'Arpa (died 1603), Italian composer, singer, and harpist

Acronym

 * Advanced Research Projects Agency, former name of the US Defense Advanced Research Projects Agency
 * ARPA-E, the Advanced Research Projects Agency-Energy, an agency created in 2007 within the US Department of Energy
 * ARPA-H, the Advanced Research Projects Agency for Health, an organization created in 2022 within the US National Institutes of Health
 * ARPA-I, the Advanced Research Projects Agency for Infrastructure, an organization created in 2022 within the US Department of Transportation
 * HSARPA, the Homeland Security Advanced Research Projects Agency, an agency within the Science and Technology Directorate at the US Department of Homeland Security
 * IARPA, the Intelligence Advanced Research Projects Activity, an organization within the US Office of the Director of National Intelligence
 * .arpa (address and routing parameter area), a top-level domain in the Domain Name System of the Internet
 * Aerolíneas Paraguayas, a former Paraguayan airline
 * Agenzie Regionali per la Protezione Ambientale, the Italian Regional Environmental Protection Agency
 * Amazon Region Protected Areas Program, an initiative to expand protection of the Amazon rainforest in Brazil
 * American Rescue Plan Act of 2021, an economic stimulus program of the United States
 * Archaeological Resources Protection Act of 1979, a federal law of the United States
 * Arctic Research and Policy Act of 1984 (amended 1990)
 * Automatic radar plotting aid, a capability of some marine radar systems
 * Average revenue per account, a metric similar to average revenue per user

Other uses

 * Arpa Yeghegnadzor, an inactive Armenian football club
 * Arpa şehriye, Turkish for orzo