ISLISP (also capitalized as ISLisp) is a programming language in the LISP family standardized by ISO working group ISO/IEC JTC 1/SC 22/WG 16 (commonly referred to simply as SC22/WG16 or WG16). The primary output of this working group was an International Standard, ISO/IEC 13816:1997(E), published by ISO. The standard was updated in 2007 and republished as ISO/IEC 13816:2007(E).