| Name ▲ | Type | CR | Version | Book |
|---|---|---|---|---|
| Xanathar | Aberration | 13 | 2014 | Waterdeep: Dragon Heist |
| Xandala | Humanoid | 7 | 2014 | Tomb of Annihilation |
| Xarann A'Daragon | Humanoid | 8 | 2014 | Waterdeep: Dungeon of the Mad Mage |
| Xardorok Sunblight | Humanoid | 5 | 2014 | Icewind Dale: Rime of the Frostmaiden |
| Xazax the Eyemonger | Aberration | 13 | 2014 | Out of the Abyss |
| Xelnene Thrul | Humanoid | 17 | 2014 | Unearthed Arcana Digital |
| Xenk Yendar | Humanoid | 10 | 2014 | Honor Among Thieves: The Thieves' Gallery |
| Xill | Monstrosity | 3 | 2014 | Mordenkainen's Fiendish Folio |
| Xilonen | Monstrosity | 5 | 2014 | Tales from the Yawning Portal: Against the Giants |
| Xocopol | Giant | 9 | 2014 | Journeys through the Radiant Citadel |