The Montreal Biodome (French: Biodôme de Montréal) is a facility located in Montreal that allows visitors to walk through replicas of four ecosystems found in the Americas. The building was originally constructed for the 1976 Olympic Games as a velodrome. It hosted both track cycling and judo events. Renovations on the building began in 1989 and in 1992 the indoor nature exhibit was opened.
The Montreal Biodome is one of four facilities operated by the Montreal Nature Museum, which include the Montreal Insectarium, Montreal Botanical Garden, and Montreal Planetarium. It is an accredited member of both the Association of Zoos and Aquariums (AZA) and the Canadian Association of Zoos and Aquariums (CAZA).