A2, A02, A002, A², A.II or A-2 may refer to: Biology and medicine British NVC community A2 (Lemna minor community), a plant community A2, the second anal vein in the Comstock-Needham system of insect wing segment naming Genes and proteins A-box 2 of insulin gene HLA-A2, a human MHC HLA-A serotype gene Ectodysplasin A2 receptor, a protein that in humans is encoded by the EDA2R gene Alpha-2 adrenergic receptor Annexin A2, a protein Apolipoprotein A2, a protein Phospholipase A2, an enzyme Prokaryotic phospholipase A2, an enzyme Hemoglobin A2, a protein Proanthocyanidin A2, an A type proanthocyanidin Urea transporter A2, a protein A2, a variant of blood groups alleles A in the ABO blood group system A2, a subfamily of rhodopsin-like receptors Medicine ATC code A02 Drugs for acid related disorders, a subgroup of the Anatomical Therapeutic Chemical Classification System Brachydactyly type A2, a disease Noradrenergic cell group A2 Computing A-2 (programming language), a follow-on to the A-0 System used on UNIVAC I A2 (operating system), software to run a computer Electronics DiMAGE A2, a digital camera produced by Minolta IBM A2, an IBM processor used in its supercomputers Cowon A2, a portable multimedia player from Cowon Gaming A2 Racer, a racing computer game series A2 Secret of the Slavers Stockade, a module in the Scourge of the Slave Lords series for Dungeons & Dragons Final Fantasy Tactics A2: Grimoire of the Rift Language Biu-Mandara A.2 languages, an Afro-Asiatic family of languages spoken in Nigeria A2, a second language level in the IB Group 2 subjects A2, a level in the Common European Framework of Reference for Languages Military A-2 jacket, a leather flight jacket A2, the military staff designation in the continental staff system for air force headquarters staff concerned with intelligence and security A 2, Göta Artillery Regiment designation, a former Swedish Army artillery regiment Music A due, a musical term often abbreviated to a2 A2, a rock band that performed the song "Chosen One" in the video game Shadow the Hedgehog Sport A2 (classification), an amputee sport classification HEBA A2, a Greek basketball league A2 volleyball league (Portugal) A2 women's volleyball league (Portugal) A2, an Italian Baseball League A2, an Italian Volleyball League A2, a grade in climbing Television A2 (remote television production), a person who manages audio equipment A2 Stereo or , a television broadcasting system A2 Teema, a panel discussion episode of Ajankohtainen kakkonen, a Finnish