American National Standards Institute

Abbreviated ANSI. A nonprofit organization of more than 1000 business and industry groups, founded in 1918, devoted to the development of voluntary standards.

ANSI represents the United States in the International Organization for Standardization (ISO) and is affiliated with CCITT. ANSI committees have developed many important standards, including the following:

• ANSI X3J11: Standard for the C programming language, including language semantics, syntax, execution environment, and the definition of the library and header files.
• ANSI X3J16: Standard for the C++ programming language.
• ANSI X3J3: Definition of the Fortran programming language compiler.
• ANSI X3.131-1986: Definition of the SCSI standard. The X3T9.2 standard contains the extensions for SCSI-2.
• ANSI X3T9.5: The working group for the FDDI definition.