Celestial is a language spoken mainly by celestials and Aasimar.
Common
Common is the most widespread language in Exandria and the primary language of humans.
Deep Speech
Deep Speech is the language of aberrations, such as mind flayers and beholders.
Draconic
Draconic is the language of dragons and is also spoken by Dragonborn.
Druidic
Druidic is the private language of druids.
Dwarvish
Dwarvish is the language of the dwarves.
Elvish
Elvish is the language of the elves and is also spoken by most half-elves.
Giant
Giant is the language spoken by giants and goliaths.
Gnomish
Gnomish is the language of gnomes.
Goblin
The Goblin language is mainly spoken by goblins.
Halfling
Halflings speak their own language, which is also called Halfling.
Infernal
Infernal is the language of the Baatezu (a subtype of devils), and of the Nine Hells.
Orc
Orc is a language spoken by orcs and half-orcs.
Primordial
The primordial languages are spoken by elemental creatures. Each element has its own dialect: Aquan (water), Auran (air), Ignan (fire), and Terran (earth).
Sylvan
Sylvan is the primary language of fey creatures.
Thieve's Cant
Thieves' Cant is less a language in its own right and more of a coded form of communication, usually between thieves.