ISO 639-1
ca Catalan; Valencian
· filed 2026-07-18 · click a code to copy
Catalan; Valencian carries the ISO 639-1 two-letter code ca.
In practice this code appears in HTML (<html lang="ca">), HTTP Accept-Language headers, locale identifiers such as ca-XX, subtitle tracks and translation files — anywhere software needs to say “this content is in Catalan”.