The Iverson Award, more formally the Kenneth E. Iverson Award for Outstanding Contribution to APL, is presented by the Special Interest Group on APL (SIGAPL) of the Association for Computing Machinery (ACM). It is presented to a person who has made significant contributions to the APL programming language or to the APL community. These contributions may be Technical (i.e. new developments in the APL language itself) or Service (assistance or support to SIGAPL or the APL community generally). The award consists of a plaque and a certificate, and is accompanied by a cash prize and a lifetime membership in SIGAPL.