Dwarves

Dwarves are a race almost as popular as speakers of conlangs as are Elves. Like the Elves, they originate in Germanic mythology and survived Christianization in folktales. The modern fantasy tradition of Dwarves is mostly based on J. R. R. Tolkien, who built his Dwarves on mythological models. He designed a conlang for the Dwarves named Khuzdul.

Examples of contemporary Dwarvish conlangs

Andreas Johansson designed a (yet unnamed) language for Dwarves in his own fantasy conworld.

Jörg Rhiemeier’s Pictic languages are spoken by Dwarves who are actually humans, but with a Dwarvish culture (including a strong tradition of mining and metalworking).