AR

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AR, Ar, or A&R may refer to:

  • The letter R

Arts, entertainment, and media[edit | edit source]

Music[edit | edit source]

Periodicals[edit | edit source]

Other media[edit | edit source]

Businesses[edit | edit source]

Language[edit | edit source]

  • Ár, written "ᛅ", a rune of the Younger Futhark alphabet
  • Arabic language (ISO 639 alpha-2 language code AR)

Mathematics, science, and technology[edit | edit source]

Computing[edit | edit source]

Biology and medicine[edit | edit source]

Mathematics[edit | edit source]

Physics and chemistry[edit | edit source]

Other uses in mathematics, science, and technology[edit | edit source]

Military[edit | edit source]

Places[edit | edit source]

Other uses[edit | edit source]