| xenophobia | xenofobia |
| xenophobic | xenófobo |
| Xenophon | Jenofonte |
| Xenophon Zolotas | Xenofon Zolotas |
| Xenophontos monastery | Jenofonte |
| Xenophyophore | Xenophyophorea |
| Xenopus | Xenopus |
| Xenotarsosaurus | Xenotarsosaurus |
| xenotransplantation | xenotrasplante |
| Xenoturbella | Xenoturbellida |
| Xenu | Xenu |
| Xeon | Intel Xeon |
| Xeraco | Jaraco |
| Xerces | Xerces |
| Xeres | Circuito Permanente de Alta Velocidad de Jerez |
| Xeresa | Jeresa |
| Xerez CD | Xerez Club Deportivo |
| Xermade | Germade |
| Xero | Xero |
| XeroBank Browser | XeroBank Browser |
| Xerochrysum | Bracteantha |
| xerography | xerografía |
| xerophthalmia | xeroftalmia |
| Xerophyllum tenax | Xerophyllum tenax |
| xerox | fotocopiar |
| Xerox Alto | Xerox Alto |
| Xert | Chert |
| Xerta | Cherta |
| Xerxes | Jerjes I |
| Xerxes I of Persia | Jerjes I |
| Xerxes II of Persia | Jerjes II |
| Xetra | XETRA |
| Xfce | Xfce |
| XFL | XFL |
| XGA | XGA |
| Xgl | Xgl |
| Xhosa | xhosa |
| XHTML | XHTML |
| xi | xi |
| Xi Scorpii | Xi Scorpii |
| Xia | Dinastía Xia |
| Xia Dynasty | Dinastía Xia |
| Xiamen | Xiamen |
| Xianbei | Xianbei |
| Xianfeng Emperor | Emperador Xianfeng |
| Xiang River | Xiang |
| Xiang Yu | Xiang Yu |
| Xiaolin Showdown | Duelo Xiaolin |
| Xiazhi | Solsticio |
| Xibalba | Xibalbá |
| Xibe | Xibe |
| Xichang Satellite Launch Center | Centro Espacial de Xichang |
| Xie Xingfang | Xie Xingfang |
| Xiehouyu | Proverbios chinos |
| Xijiang River | Xi Jiang |
| Xin Dynasty | Wang Mang |
| Xinca language | Idioma xinca |
| Xindi | Xindi |
| Xing | Crucero |
| Xingu | Xingú |
| Xingu River | Xingú |
| Xinhai Revolution | Revolución de Xinhai |
| Xinhua News Agency | Xinhua |
| Xining | Xining |
| Xinjiang | Xinjiang |
| Xinjiangovenator | Xinjiangovenator |
| Xinzo de Limia | Ginzo de Limia |
| Xiongnu | Xiongnu |
| Xipe Totec | Xipe Tótec |
| Xiphos | Xifos |
| Xirivella | Chirivella |
| Xiuhcoatl | Xiuhcóatl |
| Xiuhtecuhtli | Xiuhtecuhtli |
| Xkcd | Xkcd |
| XKMS | XKMS |
| XL Recordings | XL Recordings |
| Xmas | Navidad |
| XML | XML |
| XML Metadata Interchange | XMI |
| XML Namespace | Namespace |
| XML Schema | XML Schema |
| XML Schema Definition | XML Schema |
| XML Shareable Playlist Format | XSPF |
| XMLHttpRequest | XMLHttpRequest |
| XMM-Newton | XMM-Newton |
| XMMS | XMMS |
| XMPP | Jabber |
| XMS | Memoria extendida |
| Xochimilco | Xochimilco |
| Xochipilli | Xochipilli |
| Xochiquetzal | Xochiquétzal |
| Xois | Xois |
| Xolotl | Xólotl |
| XOOPS | XOOPS |
| XOOPS Cube | XOOPS |
| xor | o exclusivo |
| XOR gate | Puerta XOR |
| Xorazm Province | Región de Khorezm |
| XPDL | XPDL |
| XQuery | XQuery |
| XScale | Intel XScale |
| Xserve | Xserve |
| Xserve RAID | Xserve RAID |
| XSL Formatting Objects | XSL-FO |
| XSL Transformations | XSLT |
| Xuanzang | Xuanzang |
| XUL | XUL |
| Xunqueira de Ambía | Junquera de Ambía |
| Xunqueira de Espadanedo | Junquera de Espadañedo |
| Xunta de Galicia | Junta de Galicia |
| Xuxa | Xuxa |
| XXX Corps | XXX Cuerpo de Ejército |
| XxxHolic | ×××HOLiC |
| xylan | xilano |
| xylem | xilema |
| xylene | xileno |
| xylitol | xilitol |
| xylography | xilografía |
| xylophone | xilófono |
| xylophonist | xilofonista |
| xylose | xilosa |
| Xylotheque | Xiloteca |
| xylulose | xilulosa |
