Headless CMS localization refers to the process of creating and managing content in multiple languages for a headless content management system. This involves creating and storing content in multiple languages, managing translations, and delivering the appropriate content to users based on their language preferences. There are several headless CMS platforms that offer localization features, including Contentful, Prismic, and Kentico Kontent. These platforms provide tools for managing translations, such as translation workflows and translation memory, as well as APIs for delivering content in the appropriate language.