J
| Jace |
| Jacek |
| Jack |
| Jackson |
| Jacob |
| Jacob-james |
| Jacob-lee |
| Jad |
| Jaden |
| Jaden-ray |
| Jadyn |
| Jaeda |
| Jaedyn |
| Jago |
| Jahmene |
| Jai |
| Jaice |
| Jaiden |
| Jaidin |
| Jaidyn |
| Jaime |
| Jaimil |
| Jak |
| Jake |
| Jakob |
| Jakub |
| Jameel |
| James |
| James-leon |
| Jameson |
| James-phillip |
| James-sean |
| Jamie |
| Jamie-lee |
| Jan |
| Jared |
| Jarlath |
| Jase |
| Jason |
| Jasper |
| Jax |
| Jaxon |
| Jaxon-carter |
| Jaxson |
| Jay |
| Jayce |
| Jaydan |
| Jayden |
| Jayden-lee |
| Jaydon |
| Jaye |
| Jay-lee |
| Jaylen |
| Jayme |
| Jayson |
| Jay-thomas |
| Jden-lee |
| Jedidiah |
| Jeevan |
| Jehangir |
| Jensen |
| Jenson |
| Jenson-jayden |
| Jenzen |
| Jeorge |
| Jerome |
| Jesse |
| Jheikel |
| Jia |
| Jim |
| Jimmy |
| Jing |
| Joaquin |
| Jody |
| Joe |
| Joel |
| Joey |
| Joey-junior |
| John |
| John-anthony |
| John-eli |
| John-henry |
| John-james |
| Johnny |
| Johnny-j |
| John-paul |
| John-peter |
| Johny |
| Jojo |
| Jokubas |
| Jonah |
| Jonas |
| Jonathan |
| Jones |
| Jonjo |
| Jonny |
| Jordan |
| Jordan-james |
| Jorens |
| Jose |
| Joseph |
| Josh |
| Joshua |
| Joshua-james |
| Josias |
| Joss |
| Jozef |
| Jubal |
| Judah |
| Jude |
| Julian |
| Jun |
| Junior |
| Junming |
| Justas |
| Justin |