Fairfield State Hospital (as it was known from 1929 to 1963) or Fairfield Hills Hospital (as it was known after 1963) was a psychiatric hospital in Newtown, Connecticut, which operated from 1931 until 1995. At its peak, the hospital housed over 4,000 patients. The entire facility was owned and operated by the State of Connecticut Department of Mental Health. The facility still stands, just southeast of the center of Newtown.