| ISO 639-3 Print Names | art-290 |
| Castilian | |
| ISO 639-3 | art-001 | spa |
| ISO 639-2/T | art-002 | spa |
| ISO 639-2/B | art-003 | spa |
| ISO 639-1 | art-004 | es |
| ISO 639-3 Reference Names | art-289 | Spanish |
| ISO 639-3 Print Names | art-290 | Spanish |
| ISO 639-3 Inverted Names | art-291 | Castilian |
| ISO 639-3 Inverted Names | art-291 | Spanish |