| U+ | art-254 |
| 03AA | |
| Unicode Character Names | art-315 | GREEK CAPITAL LETTER IOTA DIAERESIS |
| Unicode Character Names | art-315 | GREEK CAPITAL LETTER IOTA WITH DIALYTIKA |
| American English | eng-004 | GREEK CAPITAL LETTER IOTA WITH DIALYTIKA |
| français | fra-000 | LETTRE MAJUSCULE GRECQUE IOTA TRÉMA |