A
- Niels Abel: Abel polynomials - Abelian function - Abel–Gontscharoff interpolating polynomial
- Sir George Biddell Airy: Airy function
- Waleed Al-Salam (1926–1996): Al-Salam polynomial - Al Salam–Carlitz polynomial - Al Salam–Chihara polynomial
- C. T. Anger: Anger–Weber function
- Kazuhiko Aomoto: Aomoto–Gel'fand hypergeometric function - Aomoto integral
- Paul Émile Appell (1855–1930): Appell hypergeometric series, Appell polynomial, Generalized Appell polynomials
- Richard Askey: Askey–Wilson polynomial, Askey–Wilson function (with James A. Wilson)
Read more about this topic: List Of Special Functions And Eponyms