| XSL | Extensible Stylesheet Language |
| XSL Transformations | XSL Transformations |
| XSL-FO | XSL Formatting Objects |
| Xuan Zong | Emperor Xuanzong of Tang |
| Xuanhanosaurus qilixiaensis | Xuanhanosaurus |
| Xuanzang | Xuanzang |
| Xucuru-Kariri | Xucuru |
| XUL | XUL |
| Xunqueira de Ambía | Xunqueira de Ambía |
| Xunqueira de Espadanedo | Xunqueira de Espadanedo |
| Xuto | Xuthus |
| XV arrondissement di Parigi | XVe arrondissement |
| XV dinastia egizia | Fifteenth dynasty of Egypt |
| XVI arrondissement di Parigi | XVIe arrondissement |
| XVI dinastia egizia | Sixteenth dynasty of Egypt |
| XviD | Xvid |
| XVII arrondissement di Parigi | XVIIe arrondissement |
| XVII dinastia egizia | Seventeenth dynasty of Egypt |
| XVIII arrondissement di Parigi | XVIIIe arrondissement |
| XVIII dinastia egizia | Eighteenth dynasty of Egypt |
| XX arrondissement di Parigi | XXe arrondissement |
| XX dinastia egizia | Twentieth dynasty of Egypt |
| XXI dinastia egizia | Twenty-first dynasty of Egypt |
| XXII dinastia egizia | Twenty-second dynasty of Egypt |
| XXIII dinastia egizia | Twenty-third dynasty of Egypt |
| XXIV dinastia egizia | Twenty-fourth dynasty of Egypt |
| XXIX dinastia egizia | Twenty-ninth dynasty of Egypt |
| XXV dinastia egizia | Twenty-fifth dynasty of Egypt |
| XXVI dinastia egizia | Twenty-sixth dynasty of Egypt |
| XXVII dinastia egizia | Achaemenid dynasty |
| XXVIII dinastia egizia | Twenty-eighth dynasty of Egypt |
| XXX dinastia egizia | Thirtieth dynasty of Egypt |
| XxxHOLiC | XxxHolic |
| xylano | xylan |
| Xylem Tube EP | Xylem Tube EP |
| Xylocopinae | Xylocopinae |
| Xàtiva | Xàtiva |
