| Language | Speakers/Region |
| Heloth | Common tongue in the west. |
| Anheroshi | Common tongue in the east. |
|
Dwarven |
Dwarves and duergar |
| Aklo | Derro, inhuman monsters, and evil fey |
| Gnome | Gnomes |
| Elven | Elves |
| Draconic | Lizardfolk, troglodytes, kobolds, and dragons |
| Giant/Myrdunese | Giants and ungiants |
| Goblin/Brog | Goblinoids |
| Gnoll | Gnolls |
| Orc/Tarog | Orc |
| Sylvan | Nature spirits |
| Netherspeach | Drow and other underworld races |
| Aquan | The plane of water |
| Auran | The plane of air |
| Ignan | The plane of fire |
| Terran | The plane of earth |
| Abyssal-Infernal/Kalnuegan | The hell plane, Nuegalon |
| Celestial/Erhadian | The celestial realm, Erhad |
| Druidic | Secret language of druids |
Aldrazan - The set of letters used in Helothian writings (the alphabet) originating from ancient Heroshim language. Aldrazan comes from the first and last letters, Aldra (beginning) and Zan (end). While most pronounce Aldrazan phonetically, in ancient Heroshim, both the L and R were silent, so the more accurate pronunciation would be "ah-da-zahn".