The Amber Diceless Roleplaying Game is a role-playing game set in the cosmology created by author Roger Zelazny for his Amber novels, the first of which was Nine Princes in Amber.

The Amber Diceless Roleplaying Game is unusual in that no dice are used in resolving conflicts or player actions. Instead a simple system of comparative ability, and narrative description of the action by the players and game referee, is used to determine how situations are resolved. It was created by Erick Wujcik in the early eighties, and is much more focused on relationships and roleplaying than most of the roleplaying games of that era. Most Amber characters are members of the two ruling classes in the Amber multiverse and they are much more advanced in matters of strength, endurance, psyche, warfare and sorcery than ordinary beings. This means that the only individuals who are capable of opposing a character are from his or her family, a fact that leads to much suspicion and intrigue.

The original game was published in 1991 by Phage Press, covering material from the first five novels (the "Corwin Cycle") and some details (sorcery and the Logrus) from the others. A companion volume, Shadow Knight, covering in greater detail the remaining five novels (the "Merlin Cycle"), was published in 1993. A third book, Rebma, was promised and pre-orders were taken, but it never arrived, leading to accusations that it was vaporware. The publishing rights were acquired in 2004 by Guardians of Order, who have announced their intention to release a new edition of the game.