The Nightingale Hospital is a private mental health facility in Lisson Grove, Marylebone, London.

[1] The hospital has its origins in the "Establishment for Gentlewomen During Temporary Illness" founded at Cavendish Square in March 1850.

Under her governance, it was made non-sectarian and renamed the "Institute for Gentlewomen During Illness", taking in widows and daughters of professionals, the clergy and military personnel.

[4] The Care Quality Commission criticised the hospital after an inspection in January 2018 over lack of specialist substance misuse training for nurses, ligature and fire risks, medicines management, infection control and sharing learning from incidents.

"[6] Three patients at the hospital died in 2017/8: The Care Quality Commission re-inspected the hospital in 2019 when it was rated as good overall, although child and adolescent mental health wards (which are now closed) were rated as requires improvement.