| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| IOAN | - | Romanian, Welsh, Bulgarian | ||
| IOANA | - | Romanian, Bulgarian | ||
| IOANE | - | Georgian (Archaic) | ||
| IOANN | - | Russian | ||
| IOANNA | - | Greek, Biblical Greek | ||
| IOANNES | - | Biblical Greek | ||
| IOANNIS | - | Greek | ||
| IOANNU | - | Old Church Slavic | ||
| IOB | - | Biblical Latin, Biblical Greek | ||
| IODOCUS | - | Ancient Celtic (Latinized) | ||
| IOEL | - | Biblical Greek | ||
| IOHANNA | - | Biblical Latin | ||
| IOHANNES | - | Biblical Latin | ||
| IOHEL | - | Biblical Latin | ||
| IOKASTE | - | Greek Mythology |