Avernus is a volcanic crater in Italy with significance for Roman mythology.
Avernus may also refer to: Lake Avernus, a lake in Italy Avernus Colles, a region on Mars Australian torpedo boat Avernus, a ship Avernus, a genus of spittlebugs in the family Aphrophoridae Avernus, a fictional location in the Outer Planes of the Dungeons & Dragons universe, which appeared in adventure modules like Baldur's Gate: Descent into Avernus, or video games such as Neverwinter or Baldur's Gate III Avernus, a fictional location in the 1998 Shogo: Mobile Armor Division video game Avernus, a fictional spaceship in the Helliconia series of science fiction novels
See also Averno (disambiguation) Avernum