Dwarf

The dwarf is a small bearded humanoid. While this is the norm, not all tales depict them as exclusively male. What they lack in size, they make up for in ingenuity and willpower. They are often found in the mountains or in underground caves. While short and stout, they are surprisngly nimble with their hands, and excel both as smiths and crafters of jewelry and contraptions. They usually act with skepticism towards the intentions of other races. They can live for hundreds of years and are generally very resistant. In some tales they are spirits of nature, and have natural healing and magical capabilities.

Source
While the concept of small secretive humanoids are common around the globe, the term dwarf originates from germanic folklore.

Media
Dwarves appear in the following media:

Games

 * Lord of the Rings Online - one of the playable races, but gender locked on a male character.
 * Might & Magic X: Legacy
 * Lord of the Rings Online - one of the playable races, but gender locked on a male character.
 * Might & Magic X: Legacy
 * Lord of the Rings Online - one of the playable races, but gender locked on a male character.
 * Might & Magic X: Legacy
 * Lord of the Rings Online - one of the playable races, but gender locked on a male character.
 * Might & Magic X: Legacy
 * Lord of the Rings Online - one of the playable races, but gender locked on a male character.
 * Might & Magic X: Legacy
 * Lord of the Rings Online - one of the playable races, but gender locked on a male character.
 * Might & Magic X: Legacy
 * Might & Magic X: Legacy

Novels

 * Berserk
 * Goblin Slayer
 * The Hobbit, by J. R. R. Tolkien
 * Lord of the Rings, by J. R. R. Tolkien - most notably: Gimli
 * Nibelung - most notably, the dwarf Alberich
 * Völuspá - the Poetic Edda/Sæmundar Edda/Elder Edda contains a "Dvergatal", a naming of seventy dwarves - among that are names, which later will also appear in the writings by Tolkin. Gandalf is also a mentioned character in the Völuspá, but he is a dwarf there, too, despite the name has the meaning of an elf, who is knowing magic.