ABN or abn may refer to:
ABN AMRO Bank N.V. is a Dutch bank with headquarters in Amsterdam. ABN AMRO Bank is the third-largest bank in the Netherlands.
Abnormal psychology is the branch of psychology that studies unusual patterns of behavior, emotion and thought, which may or may not be understood as precipitating a mental disorder.
Abner Doubleday (June 26, 1819 – January 26, 1893) was a career United States Army officer and Union general in the American Civil War.
Abnormal posturing is an involuntary flexion or extension of the arms and legs, indicating severe brain injury.
Abney Park cemetery is one of the Magnificent Seven cemeteries in London, England.
ABN is the Australian Broadcasting Corporation's television station in Sydney. The station began broadcasting on 5 November 1956. Its original studios were located in Gore Hill, New South Wales and were in use up until March 2004, when they were co-located with ABC Radio, Radio Australia and Australia Network at the Corporation's headquarters in the inter-city suburb of Ultimo, New South Wales.
Abnormally Attracted to Sin is the tenth solo studio album by American singer-songwriter Tori Amos, released 19 May 2009, in standard and limited CD/DVD edition.