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