| Name | # Entries |
|---|---|
| Jukes | 25 |
| Jeff | 24 |
| Jeffcoat | 24 |
| Jenks | 24 |
| Japhta | 24 |
| Jacks | 21 |
| Jelley | 20 |
| Jesters | 20 |
| Judkins | 20 |
| Jervis | 19 |
| John's | 19 |
| Joines | 19 |
| Jwara | 18 |
| Jumat | 18 |
| Jorge | 17 |
| Jaggard | 16 |
| Jaycar | 16 |
| Jephson | 16 |
| Jerram | 16 |
| Jessep | 16 |
| Jobson | 15 |
| Johnstone | 15 |
| Joubert | 15 |
| Julius | 15 |
| Jhetam | 15 |
| Jogi | 15 |
| Jason | 14 |
| Jo | 14 |
| Julie | 14 |
| Jowell | 14 |
| Japan | 13 |
| Jb | 13 |
| Jolliffe | 13 |
| Jankelowitz | 13 |
| Jagarnath | 13 |
| Jae | 12 |
| Jag | 12 |
| Jager | 12 |
| Janse | 12 |
| Jefferis | 12 |
| Jemmett | 12 |
| Jeon | 12 |
| Jeram | 12 |
| Jessen | 12 |
| Jankowitz | 12 |
| Jack | 11 |
| Jain | 11 |
| Jennens | 11 |
| Jermyn | 11 |
| Jessup | 11 |
| Jillings | 11 |
| Joass | 11 |
| Jory | 11 |
| Jamodien | 11 |
| Jam | 10 |
| Janet | 10 |
| Jims | 10 |
| Joe | 10 |
| Joe's | 10 |
| Jonker | 10 |
| Jonkers | 10 |
| Jonson | 10 |
| Joyes | 10 |
| Jump | 10 |
| Justin | 10 |
| Joyner | 10 |
| Jakavula | 10 |
| Justus | 10 |
| Jagjivan | 10 |
| Jagessar | 10 |
| Jungbahadur | 10 |
| Jaeger | 9 |
| Jagger | 9 |
| Jamie | 9 |
| Jaspers | 9 |