Szass Tam is a fictional character in the Forgotten Realms campaign setting for the Dungeons & Dragons (D&D) fantasy role-playing game.

Szass is a lich, an undead necromancer. He is the leader and most powerful of the Red Wizards of Thay, a group of eight zulkirs, or wizards, who rule the country of Thay. Many of his servants are undead.^[1][2][3]

Szass is the ruler of Thaymount, however, rumor says that Szass is under the command of Larloch, searching for artifacts. He attempts to destroy the world and create his own in the year of the Dark Circle (1478 DR), but this plot is foiled.

Szass Tam in his attempt to rule over Thay and Toril is featured in the Forgotten Realms: The Haunted Lands novel trilogy by Richard Lee Byers (2007–2009) Szass makes an appearance in R.A. Salvatore's 2010 book Gauntlgrym. Other works include:

• Whitney-Robinson, Voronica. The Crimson Gold (Wizards of the Coast, 2003).
• Donovan, Dale. Villains' Lorebook (TSR, 1998).
• Pryor, Anthony. Spellbound (TSR, 1995).
• Rabe, Jean. Red Magic (TSR, 1991).
• Steve Perrin. Dreams of the Red Wizards (TSR, 1988).

"Tam has been a prominent antagonist in various Dungeons & Dragons adventures and novels, although his profile is not quite as prominent as the liches Vecna and Acererak".^[4] Szass Tam is a villain in the 2023 film Dungeons & Dragons: Honor Among Thieves,^[1][4] appearing in two scenes in the film,^[5] and portrayed by Scottish actor Ian Hanmore.^[6]