Where is the smallest bone in the human body?

The smallest bone in the human body is called the stapes. It's one of the three bones contained in our middle ear, the other two are called malleus and incus. The three smallest and lightest bones in our body are collectively called the ossicles and serve to convey sound from the outer ear to the inner ear. The absence or lesion of these bones may lead to severe deafness.

The name stapes comes from Latin, meaning a stirrup, which the tiniest bone in the human body resembles in form.