| Iris | Colorful, Rainbow; Diminutive of Beatrice F: A variant of Beatrix meaning bringer of joy. In the Divine Comedy, Beatrice was Dante's guide through Paradise, perhaps inspired by Beatrice Portinari who was Dante's earliest love.; Flower; Rainbow; Rainbow go |
| IRTA | A name meaning earth or the ground. |
| IRUS | myth name (challenged Odysseus on his return to Ithaca) |
| Iryna | A name meaning a peaceful woman. |
| Irynia | A name meaning a serene spirit. |
| ISADORA | The gift of the goddess Isis. |
| Isadore | Gift of the Egyptian goddess Isis. |
| Isadorer | One who brings a gift from Isis. |
| ISAURA | A name meaning gentle breeze. |
| Isaure | A name meaning golden light. |
| ISIDORE | A gift from the goddess Isis. |
| Isidoror | A variation of gift of Isis. |
| Isidrro | A variant of gift of Isis. |
| Ismena | A name meaning wise or sage. |
| ISMENE | myth name (daughter of Oedipus) |
| Ismini | Daughter of Oedipus. |
| ISTVAN | A name meaning crowned in glory. |
| Ivanetsr | A rare name meaning God is gracious. |
| Ivankor | A strong and noble warrior. |
| Ivy | A creeper; Ivy; Resembling the evergreen vining plant; A Vine |
| Ixidorr | A variant of the gift of Isis. |
| IXION | myth name (father of the centaurs) JACINTO |
| Iyonna | Variant of Hannah. Gracious. |
| Jacenia | A name meaning hyacinth flower. |
| Jacinda | A name meaning hyacinth flower. |
| Jacinth | Jacinth is derived from the name of a precious stone. This name is also related to the Greek flower name for hyacinth. |
| Jacintha | Derived from the hyacinth flower. |
| Jacynth | "Beautiful, Beloved" |
| Jaison | Variant of Jason: a healing. |
| JARINA | A peaceful, calm morning. |
| Jarine | A bright and joyful spirit. |
| Jason | God is my salvation / a healer; in mythology, the leader of the Argonauts; He that cures; A healing. In Greek mythology, the leader of the group of warrior heroes called the Argonauts.; Healer; Mythical leader Healing |
| Jasunr | One who is full of glory |
| Javan | Son of Japtheth |
| Jaycen | Variant of Jason: a healing. |
| Jayr | One who is full of victory. |
| Jaysen | Variant of Jason: a healing. |
| Jayson | Healer. Alternate spelling of Jason. |
| Jencir | A unique and modern invented name. |
| Jenesis | Creation or Beginning |