Magnanville (French pronunciation: [maɲɑ̃vil] ⓘ) is a commune in the Yvelines department in the Île-de-France region in north-central France.

The village expanded in the twentieth century, with significant house building taking place from the 1970s.

Archaeological excavations have found evidence of a small agricultural settlement in the fifth century BCE.

The chateau was demolished in 1803, but one wing was rebuilt four years later by Baron Jacques-Florent Robillard, governor of the Bank of France.

The chateau served as a military hospital in World War II, and has since become a care home.