The First Chronicles of Amber

• Nine Princes in Amber (1970)
• The Guns of Avalon (1972)
• Sign of the Unicorn (1975)
• The Hand of Oberon (1976)
• The Courts of Chaos (1978)

The Second Chronicles of Amber

• Trumps of Doom (1985)
• Blood of Amber (1986)
• Sign of Chaos (1987)
• Knight of Shadows (1989)
• Prince of Chaos (1991)

Related Works

• The Complete Amber Sourcebook by Theodore Krulik (authorized by Zelazny) gives expanded versions of the background stories for each major and minor character, including some stuff that's not in the books.
• The Visual Guide to Castle Amber by Neil Randall (authorized by Zelazny) is generally agreed to be mediocre - a set of floorplans with insipid narration by Flora.
• Several short stories set in Amber universe were also published by Zelazny.