The Museum of Science (MoS) is a nature and science museum and indoor zoological establishment located in Science Park, a plot of land in Boston and Cambridge, Massachusetts, spanning the Charles River. Along with over 700 interactive exhibits, the museum features a number of live and interactive presentations throughout the building each day, along with scheduled film showings at the Charles Hayden Planetarium and the Mugar Omni Theater. Additionally, the Museum of Science is an accredited member of the Association of Zoos and Aquariums (AZA), being home to over 100 animals, many of which the museum gained after they were surrendered, confiscated, rescued or rehabilitated.

A science museum is a museum devoted primarily to science. Older science museums tended to concentrate on static displays of objects related to natural history, paleontology, geology, industry and industrial machinery, etc. Modern trends in museology have broadened the range of subject matter and introduced many interactive exhibits. Modern science museums, increasingly referred to as 'science centres' or 'discovery centres', also feature technology.