| Name | Meaning | Gender | Origin |
|---|
| Gay | merry | Male | |
| Goma | Joyful Dance | Unisex | African |
| Happy | Showing satisfaction or joy | Female | English |
| Hedy | German, war | Female | English |
| Helgi | productive, successful, happy | Male | Norse |
| Hilary | cheerful, happy | Male | Latin |
| Hillary | happy, cheerful | Female | Latin |
| Ida | prosperous | Female | |
| Iris | rainbow, a play of colours | Female | |
| Isaac | laughing one | Male | Hebrew |
| Ivy | ivy plant, a wine | Female | Plant |
| Jada | wise | Female | Spanish |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jasmine | Flower
| Female | Persian |
| Jay | jaybird | Male | Latin |
| Joli | Cheerful; Pretty. | Unisex | English |
| Jolie | French for pretty | Female | |
| Joy | From Joyce - Gay and joyful | Female | Word |
| Joyce | after James Augustine Aloysius Joyce, Irish writer and poet | Female | Latin |
| Jubilee | ram's horn | Female | Hebrew |
| June | 6Th Month | Female | English |
| Kamin | From Star trek episode Inner Light | Unisex | |
| Kari | curly hair | Male | Norse |
| Kayleigh | Slender | Unisex | English |
| Keiko | Japanese for happy or beloved | Female | Japanese |