| ISO 639-3 Reference Names | art-289 |
| Old Persian (ca. 600-400 B.C.) | |
| ISO 639-3 | art-001 | peo |
| ISO 639-2/T | art-002 | peo |
| ISO 639-2/B | art-003 | peo |
| ISO 639-3 Print Names | art-290 | Old Persian (ca. 600-400 B.C.) |
| ISO 639-3 Inverted Names | art-291 | Persian, Old (ca. 600-400 B.C.) |