| # | Name | Origin | Meaning | Gender | Save |
|---|---|---|---|---|---|
| 1321 | Irayna | Greek | Peace. Greek goddess of peace. | F | |
| 1322 | Irena | Greek | Peace. | F | |
| 1323 | Irene | Greek | Peace. An early Christian martyr, and later borne by several Byzantine empresses. | F | |
| 1324 | Iriana | Greek | Peace. Greek goddess of peace. | F | |
| 1325 | Irina | Greek | Peace. | F | |
| 1326 | Irini | Greek | Peace. | F | |
| 1327 | Irinia | Greek | Peace. | F | |
| 1328 | Iris | Greek | Rainbow goddess of Greek mythology who used rainbows as a bridge to carry messages from the gods to mankind. Iris is also a flower name. | F | |
| 1329 | Irisa | Greek | Rainbow. | F | |
| 1330 | Irta | Greek | Pearl. | F | |
| 1331 | Irus | Greek | Challenged Odysseus on his return to Ithaca. | M | |
| 1332 | Iryna | Greek | Peace. | F | |
| 1333 | Irynia | Greek | Peace. | F | |
| 1334 | Isadora | Greek | Gift of Isis (this name is Greek even though Isis is an Egyptian deity). Feminine variant of Isidore. Famous Bearer: Dancer Isadora Duncan (1878-1927). | F | |
| 1335 | Isadore | Greek | Gift of Isis. | F | |
| 1336 | Isadorer | Greek | Strong gift. | M | |
| 1337 | Isahel | Greek | Variant of Elizabeth: From the Hebrew Elisheba, meaning either oath of God, or God is satisfaction. | F | |
| 1338 | Isahella | Greek | Variant of Elizabeth: From the Hebrew Elisheba, meaning either oath of God, or God is satisfaction. | F | |
| 1339 | Isahelle | Greek | Variant of Elizabeth: From the Hebrew Elisheba, meaning either oath of God, or God is satisfaction. | F | |
| 1340 | Isaura | Greek | Gentle breeze. | F | |