This is a list of the most common boy names starting with the letter J, based on babies born in the United States in the year 2021.
| Name | Births |
|---|---|
| James | 12,367 |
| Jack | 9,504 |
| Jackson | 9,197 |
| Jacob | 8,397 |
| John | 8,130 |
| Joseph | 8,067 |
| Julian | 7,629 |
| Jayden | 6,887 |
| Josiah | 6,065 |
| Jaxon | 5,693 |
| Joshua | 5,467 |
| Jonathan | 4,412 |
| Jameson | 4,280 |
| Jeremiah | 4,193 |
| Jordan | 3,981 |
| Jose | 3,971 |
| Jaxson | 3,673 |
| Jace | 3,672 |
| Jasper | 2,848 |
| Jason | 2,845 |
| Jonah | 2,711 |
| Jude | 2,491 |
| Jayce | 2,403 |
| Juan | 2,344 |
| Jesus | 2,248 |
| Justin | 2,148 |
| Judah | 2,093 |
| Jesse | 1,881 |
| Joel | 1,786 |
| Jeremy | 1,471 |
| Jax | 1,444 |
| Jett | 1,443 |
| Javier | 1,419 |
| Jorge | 1,232 |
| Jensen | 1,087 |
| Jaden | 1,076 |
| Joaquin | 1,073 |
| Josue | 1,072 |
| Jaylen | 1,034 |
| Julius | 1,034 |
| Jake | 965 |
| Jay | 855 |
| Jared | 800 |
| Jaiden | 735 |
| Jeffrey | 723 |
| Johnny | 708 |
| Johnathan | 693 |
| Jayceon | 670 |
| Jaxton | 661 |
| Jase | 590 |
| Jasiah | 582 |
| Jalen | 565 |
| Jamison | 556 |
| Jonas | 555 |
| Jaziel | 537 |
| Jayson | 501 |
| Jamari | 481 |
| Jamir | 481 |
| Julio | 450 |
| Jaime | 449 |
| Julien | 447 |
| Jamie | 437 |
| Johan | 436 |
| Justice | 431 |
| Jaxxon | 405 |
| Joziah | 359 |
| Jefferson | 355 |
| Jerry | 348 |
| Junior | 342 |
| Jimmy | 329 |
| Jagger | 321 |
| Joe | 304 |
| Jedidiah | 300 |
| Jakari | 292 |
| Jiraiya | 286 |
| Jon | 279 |
| Jakob | 276 |
| Jamal | 266 |
| Judson | 262 |
| Jacoby | 259 |
| Jadiel | 257 |
| Jericho | 256 |
| Jones | 249 |
| Joey | 247 |
| Jesiah | 246 |
| Jaxx | 246 |
| Jovanni | 245 |
| Jakai | 242 |
| Jabari | 240 |
| Jaxtyn | 240 |
| Jair | 238 |
| Jakobe | 237 |
| Jeremias | 236 |
| Juelz | 216 |
| Jordy | 206 |
| Jaxen | 205 |
| Jairo | 205 |
| Joan | 185 |
| Jerome | 184 |
| Jad | 181 |