ASN may refer to:

Organisations:

• ASN Bank in the Netherlands
• American Society of Nephrology
• American Society for Neurochemistry
• American Society of Neuroimaging
• American Society for Nutrition
• Archstone (former ticker symbol), a United States real estate investment trust
• Associated Screen News of Canada
• Association for the Study of Nationalities, an association devoted to the study of ethnicity and nationalism
• Autorit de s ret nucl aire, the French nuclear safety authority

Other:

• Abstract Syntax Notation One (ASN.1)
• Adobe Solutions Network
• Advance Ship Notice
• All Sports Network
• American Saturday Night, a country music album by Brad Paisley
• Asparagine (Asn), an amino acid
• Associate of Science in Nursing
• Atlantic Satellite Network, a television channel in Canada now known as CTV Two Atlantic and sometimes still referred to as ASN
• The second-level domain name asn.au, reserved for Australian associations and non-profit organisations
• Autonomous System Number, an identifier for a collection of IP networks and routers under the control of one entity
• Avatar Spirit .Net, a fansite and community webpage for the television show Avatar: The Last Airbender
• Aviation Safety Network
• Addlestone railway station, United Kingdom (National Rail code)
• Talladega Municipal Airport (IATA: ASN)

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