Heroes of Horror (ISBN 0-7869-3699-1) is a hardcover supplement to the Dungeons and Dragons role-playing game, version 3.5. It is intended for use by Dungeon Masters who want to incorporate elements of horror into their game. It contains ideas for pacing and other elements of horror drama into the game, new rules for horror themed games (including the third iteration of the taint mechanic), as well as horror themed base classes, feats, prestige classes and NPCs (non-player characters).