AR, Ar, or A&R may refer to:
An arthropod (from Greek arthro-, joint + podos, foot) is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and jointed appendages (paired appendages).
Argentina (/ˌɑːrdʒənˈtiːnə/; Spanish: [aɾxenˈtina]), officially the Argentine Republic (Spanish: República Argentina), is a federal republic in the southern half of South America.
Arnold Alois Schwarzenegger (/ˈʃwɔːrtsənˌɛɡər/; German: [ˈaɐ̯nɔlt ˈalɔʏs ˈʃvaɐ̯tsn̩ˌɛɡɐ]; born July 30, 1947) is an Austrian-American actor, producer, businessman, investor, author, philanthropist, activist, and former professional bodybuilder and politician.
Arabic (Arabic: العَرَبِيَّة, Al-ʻarabiyyah [ʔalʕaraˈbijːah] or Arabic: عَرَبِيّ ʻarabiyy [ʕaraˈbijː]) is a Central Semitic language that was first spoken in Iron Age northwestern Arabia and is now the lingua franca of the Arab world.
Armenia (/ɑːrˈmiːniə/, /-ˈmiːnjə/; Armenian: Հայաստան, tr. Hayastan, IPA: [hɑjɑsˈtɑn]), officially the Republic of Armenia (Armenian: Հայաստանի Հանրապետություն, tr.
Artificial intelligence (AI) is intelligence exhibited by machines. In computer science, an ideal "intelligent" machine is a flexible rational agent that perceives its environment and takes actions that maximize its chance of success at some goal.
Arizona (/ɛərɪˈzoʊnə/; /ærɪˈzoʊnə/) (Navajo: Hoozdo Hahoodzo [xòːztò xɑ̀xòːtsò]; O'odham: Alĭ ṣonak [ˡaɺi ˡʃonak]) is a state in the southwestern region of the United States.
The United States Air Force facility commonly known as Area 51 is a remote detachment of Edwards Air Force Base, within the Nevada Test and Training Range.
Argentina–Chile relations refers to interstate relations between the Republic of Chile and the Argentine Republic.