The following languages are spoken in Sundering Shadows:

| Language: | Spoken by: |
|Abyssal|Demons and other chaotic-evil outsiders|
|Aklo|Evil-aligned fey, feytouched|
|Auran|Flying creatures, air-based creatures, air genasi|
|Aquan|Aquatic and water-based creatures, water genasi|
|Beast|Beastkin, gnolls, wemics|
|Celestial|Angels and other good-aligned outsiders|
|Common|Humans, civilized races|
|Draconic|Dragons, kobolds, trained arcane magic users|
|Drow|Drow|
|Dwarvish|Dwarves|
|Elven|Elves, voadkyn, centaurs|
|Goblin|Goblins, hobgoblins, bugbears|
|Giant|Firbolgs, ogres, ogre-magi|
|Gnomish|Gnomes|
|Halfling|Halflings|
|Ignan|Fire-based creatures, fire genasi|
|Infernal|Devils and other lawful-evil outsiders|
|Orcish|Orcs|
|Saurian|Saurians|
|Tengu|Tengus|
|Terran|Earth-based creatures, earth genasi|
|Sylvan|Animals, fey|
|Undercommon|Beast/uncivilized races|
|Yuan-ti|Yuan-ti|