Knight Artorias (騎士アルトリウス), also known as Artorias the Abysswalker or Artorias of the Abyss, is a boss in Dark Souls. He appears exclusively in the Artorias of the Abyss DLC named after him.

Artorias was previously a mentioned character in the base game, in which the Chosen Undead must acquire Artorias' ring by slaying

his former companion, Great Grey Wolf Sif. He is also a mentioned character in Dark Souls III, in which he is known as the "Wolf Knight", his real name seemingly lost to history.