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A9, A.9, A09, A 9 or A-9 may refer to


  • ATC code A09 Digestives, including enzymes, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • Biolimus A9, an immunosuppressant
  • British NVC community A9, the Potamogeton natans community, one of the aquatic communities of the British National Vegetation Classification
  • HLA-A9, a broad antigen serogroup of Human MHC HLA-A
  • Subfamily A9, a Rhodopsin-like receptors subfamily


  • A9home, a small form factor computer
  • A9.com, a website and search engine by Amazon.com
  • Apple A9, a 64-bit system on a chip (SoC) designed by Apple Inc.
  • Hanlin eReader A9, an ebook reader


  • Breda A.9, a 1928 Italian biplane trainer aircraft
  • CallAir A-9 Quail, an agricultural aircraft
  • Georgian Airways's IATA code
  • Lockheed A-9, a ground attack aircraft based on the Lockheed YP-24 fighter prototype
  • Northrop YA-9, a ground-attack aircraft that competed with the Fairchild Republic A-10 Thunderbolt II



  • A9 (band), a Japanese rock band originally named Alice Nine

Other uses[edit]

See also[edit]