Monstrum

Monstrum may refer to:


 * Latin monstrum, an unnatural portent and the origin of the English word monster
 * Monstrum (film), a 2018 Korean film
 * Vriesea monstrum, a bromeliad plant species
 * AZX-Monstrum, a computer project
 * Monstrum, a 2015 survival horror video game published by Soedesco
 * Monsturm 2, a 2022 multiplayer survival horror video game and sequel to the above
 * Monstrum, a novel by Donald James
 * "Monstrum", a short story by J. N. Williamson
 * An element in the game Tomb Raider: The Angel of Darkness