Monster house may refer to:

A monster is any fictional creature, usually found in legends or horror fiction, that is often hideous and may produce fear or physical harm by either its appearance or its actions. The word "monster" derives from Latin monstrum, an aberrant occurrence, usually biological, that was taken as a sign that something was wrong within the natural order.

The word connotes something wrong or evil; a monster is generally morally objectionable, physically or psychologically hideous, and/or a freak of nature. It can also be applied figuratively to a person with similar characteristics like a greedy person or a person who does horrible things.

Ancient Greco-Roman, Celtic, Semitic, Norse, Chinese and Sumerian folklore all had a wealth of legendary beasts. Some of the most famous include:

During the age of silent movies, monsters tended to be human-sized, e.g., Frankenstein's monster, the Golem, werewolves and vampires. The film Siegfried featured a dragon that was actually a giant puppet on tracks. A few movie dinosaurs were created with the use of stop-motion animated models, as in RKO's King Kong, the first giant monster film of the sound era.

A house is a building or structure that has the ability to be occupied for habitation by humans or other creatures. The term house includes many kinds of dwellings ranging from rudimentary huts of nomadic tribes to complex structures composed of many systems.English-speaking people generally call any building they routinely occupy "home".

The social unit that lives in a house is known as a household. Most commonly, a household is a family unit of some kind, though households may be other social groups, organizations or individuals.

The English word house derives directly from Old English Hus meaning "dwelling, shelter, home, house," which in turn derives from Proto-Germanic Khusan (reconstructed by etymological analysis) which is of unknown origin. The house itself gave rise to the letter 'B' through an early Proto-Semitic hieroglyphic symbol depicting a house. The symbol was called "bayt", "bet" or "beth" in various related languages, and became beta, the Greek letter, before it was used by the Romans.