AR, Ar, or A&R may refer to:
An arthropod (, from Greek ἄρθρον arthron, "joint" and πούς pous, "foot" (gen. ποδός)) is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and paired jointed appendages.
Argentina (Spanish: [aɾxenˈtina]), officially the Argentine Republic (Spanish: República Argentina), is a country located mostly in the southern half of South America.
Arnold Alois Schwarzenegger (; German: [ˈaʁnɔlt ˈʃvaʁtsn̩ˌʔɛɡɐ]; born July 30, 1947) is an Austrian-American politician, actor, filmmaker, businessman, author, and former professional bodybuilder.
Arabic (Arabic: العَرَبِيَّة, al-ʻarabiyyah, [al ʕaraˈbijːa] (listen) or عَرَبِيّ, ʻarabī, [ˈʕarabiː] (listen) or [ʕaraˈbij]) is a Semitic language that first emerged in the 1st to 4th centuries CE.
In computer science, artificial intelligence (AI), sometimes called machine intelligence, is intelligence demonstrated by machines, in contrast to the natural intelligence displayed by humans.
Ariana Grande-Butera (; born June 26, 1993) is an American singer, songwriter, and actress. A multi-platinum, Grammy Award-winning recording artist, she is known for her wide vocal range, which critics have often compared to that of Mariah Carey.
The Armenian Genocide (Armenian: Հայոց ցեղասպանություն, Hayots tseghaspanutyun; Turkish: Ermeni Soykırımı/Ermeni Kırımı; French: Génocide arménien), also known as the Armenian Holocaust, was the Ottoman government's systematic extermination of 700,000 to 1.5 million Armenians, mostly citizens of the Ottoman Empire.
Arsenal Football Club is a professional football club based in Islington, London, England, that plays in the Premier League, the top flight of English football.