The Cité des Sciences et de l'Industrie or simply CSI is the biggest science museum in Europe. Located in the Parc de la Villette in Paris, France, it is one of the three dozen French Cultural Centers of Science, Technology and Industry (CCSTI), promoting science and science culture.

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.