The International Standard Name Identifier is a system for uniquely identifying the public identities of contributors to media content, such as books, television shows, and newspaper articles. This identifier consists of 16 digits. Optionally it can be presented divided into four blocks.

It was developed under the auspices of ISO as Draft International Standard 27729; The valid standard was published on March 15, 2012. Technical Committee 46, Subcommittee 9 (CT 46 / SC 9) is responsible for the development of the standard.

The ISNI can be used to disambiguate names that could otherwise be confused and links data on names that are collected and used across all sectors of the media industry.