Whittingham Mental Hospital, formerly Whittingham Asylum, was a psychiatric hospital in Whittingham, England. The hospital was founded in 1873 and closed in 1995. During the mid-twentieth-century, Whittingham was renowned as a key site for the clinical development of electroencephalography (the recording of the electrical activity of the brain).

At its peak, Whittingham was the largest mental hospital in the UK and one of the largest in Europe, with a population of over 3,500 patients by the time of the Second World War (1939-1945). During the 1970s, the Hospital was beset by scandals following inquiries into the physical and financial mistreatment of patients which, combined with the growing financial costs of running such a large site, led to its closure in 1995.