| X | 5 |
| XAEVIEAN | 1 |
| XAFIS | 1 |
| Xander | 1 |
| XANTHAKIS | 3 |
| XANTHIS | 1 |
| XANTHOPOULOS | 2 |
| XANTHOS | 3 |
| XANTHOULIS | 1 |
| XARHAKOS | 1 |
| XAUDARO | 1 |
| XAVIER | 11 |
| XAVIERQUINN | 1 |
| XEFTERAS | 2 |
| XENAKIS | 1 |
| XENIKIS | 1 |
| XENIKOUDIS | 1 |
| XENITA | 3 |
| XENODOHOS | 1 |
| XENOPHONTOS | 4 |
| XENOPHOUBALL | 1 |
| XENOS | 23 |
| XENOUDAKIS | 1 |
| XEPAPAS | 2 |
| XEPAPASStephen | 1 |
| XERRI | 23 |
| XHMAS | 1 |
| XIA | 2 |
| XIBERRAS | 12 |
| XILAS | 1 |
| XIMENES | 1 |
| XINOS | 1 |
| XINTAVELONIS | 3 |
| XIOURIS | 2 |
| XIPELL | 2 |
| XIPOLITIDOU | 1 |
| XIPTERAS | 5 |
| XIROS | 1 |
| xo | 1 |
| XOURIS | 1 |
| XOXOXOXOXOXOXOXOXOXOXOXOXOX | 1 |
| XU | 1 |
| XUEREB | 53 |
| XUERES | 1 |
| XUERUB | 1 |
| XV | 1 |
| Xxxx | 1 |
| XYNIAS | 2 |
| XYNOS | 1 |
| XYPOS | 1 |