Big Monster Toys (BMT), established May 1988, is a United States-based toy and game inventing company.
Big Monster Toys' founders came from the defunct toy and game-producing company Marvin Glass and Associates. The company is located in the West Loop section of Chicago just a ten-minute walk from the "Loop." The studio occupies about 18,000 square feet (1,700 m2) of space for over 25 designers, devoted to inventing toys and games to be licensed around the world. Their facility boasts an audio recording studio, a full machine shop and a digital editing facility.