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.
Abnormal posturing is an involuntary flexion or extension of the arms and legs, indicating severe brain injury.
Abner Doubleday (June 26, 1819 – January 26, 1893) was a career United States Army officer and Union general in the American Civil War.
Abney Park cemetery is one of the Magnificent Seven cemeteries in London, England.
Abner Mares Martínez (born November 28, 1985) is a Mexican-American professional boxer who has held the WBA (Regular) featherweight title since 2016. He is a four-time world champion in three weight classes, having previously held the IBF bantamweight title from 2011 to 2012; the WBC super bantamweight title from 2012 to 2013; and the WBC featherweight title in 2013. Additionally he held the IBO bantamweight title from 2010 to 2011. As an amateur, Mares won numerous medals at international tournaments while representing Mexico.
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.
Abner Louima (born 1966 in Thomassin, Haiti) is a Haitian who was assaulted, brutalized, and forcibly sodomized with a broken-off broom handle by officers of the New York City Police Department after he was arrested outside a Brooklyn nightclub in 1997.