| XAAIEBA f & m ? |
| XABI m Basque |
| XACK m English |
| XACOBE m Galician |
| XADEN m English |
| XADRIAN m English, Romanian, Polish, Russian |
| XÁN m Galician |
| XAN m African |
| XANA f Asturian |
| XANADU f & m Literature |
| XANATOS m Popular Culture |
| XANATOS m Greek Mythology |
| XANDIR m Popular Culture |
| XANDRIA f English |
| XANDRU m Maltese |
| XANE m English |
| XANIA f & m Spanish |
| XANIC f ? |
| XANNA f ? |
| XANNDRIA f English |
| XANS m ? |
| XANTHIPPUS m Greek Mythology |
| XANTHIS m Greek Mythology |
| XANTHO f ? |
| XANTHUS m Greek Mythology |
| XANTIPPA f Theology |
| XAOL m ? |
| XARIA f ? |
| XARLES m French |
| XARLI f English (modern) |
| XAUDIA f ? |
| XAVERIUS m Dutch |
| XAVI m Catalan |
| XAVIANNA f ? |
| XAVIARA f English |
| XAVIÈRE f French |
| XAVIOUS m ?, Arabic |
| XAY m Laotian |
| XAYKHANTANY m Laotian |
| XBALANQUE m New World Mythology |
| XELA f English (modern) |
| XELDA f English |
| XELLA f ? |
| XELTON m English (modern) |
| XENAD f American |
| XENDENTHRYA f English |
| XENOBIA f ? |
| XENOCLEIA f Greek |
| XENOCLES m Ancient Greek (Latinized) |
| XÉNOCRATE m French |
| XENÓCRATES m Spanish |
| XENÓFANES m Galician, Portuguese |
| XENOFONT m Catalan |
| XENOFONTE m Galician, Portuguese |
| XENOKLEIA f Greek |
| XENOKLES m Ancient Greek |
| XÉNOPHANE m French |
| XENOPHANES m Ancient Greek |
| XENOPHILIUS m Literature |
| XENOPHILIUS m Greek |
| XENOPHILIUS m ? |
| XÉNOPHON m French |
| XENOS m Greek |
| XENOVEVA f Asturian |
| XENU m Theology |
| XENX f English |
| XERAZADE f Portuguese, Portuguese (Brazilian) |
| XERESA f Spanish |
| XEROME m Galician |
| XERT f Irish, French, Scottish, Swedish |
| XERYUS m English |
| XHILJOLA f Albanian |
| XHULIA f Albanian |
| XHULIANA f Albanian |
| XI f Chinese |
| XIADANI f Native American, Zapotec |
| XIAER m & f Celtic Mythology, Chinese |
| XIAH f & m Asian, English (Modern) |
| XIAN m & f ? |
| XIAO-HONG f Chinese |
| XIAOLONG m & f Chinese |
| XIAOPEI f Chinese |
| XIAO-XING f Chinese |
| XILONEN f Aztec Mythology |
| XIMENES m English, ? |
| XIMO m Catalan |
| XIN f & m Chinese |
| XIN-JING f & m Chinese |
| XIOLA f ? |
| XIRDENIA f Mythology |
| XITLALIC f Mythology, Spanish |
| XIUHTECUHTLI m Aztec Mythology |
| XIUXIU f Chinese |
| XOCOTL m Aztec Mythology |
| XOE f Popular Culture |
| XOF m German, Italian, Russian |
| XOK m Laotian |
| XOLOTL m Aztec Mythology, Toltec Mythology |
| XONIA f English |
| XOSUÉ m Galician |
| XPTOFERI m English, ?, Biblical |
| XTABAY f New World Mythology |
| XTHRIL f Mythology |
| XUANA f Asturian |
| XULIANO m Galician |
| XULIO m Galician |
| XUNIO m Galician |
| XUSTINIANO m Galician |
| XUSTINO m Galician |
| XUXA f Portuguese (Brazilian) |
| XYLANDER m ? |
| XYLEENA f English (Modern) |
| XYLONA f Greek, Ancient Roman |
| XYRHANIA f Filipino |
| XYRIS f ? |
| XYSTUS m Theology |
| XZAVIANA f African |
| XZAVIANA f African |
| XZAVION m English |
| XZAYVIANA f English |
| XZYISHAH f ? |
