Vecna is a fictional character in Dungeons & Dragons, a role-playing game.
Vecna may also refer to:
Businesses Vecna Technologies, an American healthcare information technology company Vecna Robotics, an American industrial robotics and technology company
Television Vecna (Stranger Things), the main antagonist of Stranger Things
Gaming Vecna Lives!, a 1990 Dungeons & Dragons adventure Die Vecna Die!, a 2000 Dungeons & Dragons adventure Vecna: Eve of Ruin, a 2024 Dungeons & Dragons adventure