ANSI or may refer to:

• American National Standards Institute, a private nonprofit organization that oversees the development of voluntary consensus standards
• Area of Natural and Scientific Interest, used by the Government of Ontario, Canada to classify land zones

In computing, there are following meanings, derived from American National Standards Institute:

• ANSI escape code, terminal control sequences
  • ANSI art, a computer art form used on Bulletin Board Systems (BBSes)
• Windows ANSI code page, any Windows code page that can be a default character encoding
  • Windows-1252, the default character encoding of Western European languages

Ansi may refer to:

• Ansi, Estonia, village in Kaarma Parish, Saare County, Estonia
• Aswad Ansi, Arab false prophet
• Ansi Agolli (born 1982), Albanian football player
• Ansi Nika (born 1990), Albanian football player
• Ansi City, an ancient city of the Goguryeo in modern Anshan city, China

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