St. John's Hospital, or St. John's Medical Center, or similar, may refer to:

Belgium

• Old St. John's Hospital, Bruges

China

• St. John Hospital (Hong Kong)

India

• St. John's Medical College, Bangalore

Ireland

• St. John's Hospital, Limerick, County Limerick
• St. John's Hospital (Sligo), County Sligo
• St. John's Hospital (Enniscorthy), County Wexford

Israel

• Saint John Eye Hospital Group, Jerusalem

Portugal

• St John's Hospital (Hospital de São João), Porto

United Kingdom

• St John's Hospital, Livingston, Scotland
• St John's Hospital, Bracebridge Heath, Lincolnshire, England
• St John's Hospital, Bath, Somerset, England
• Hospital of St John and St Elizabeth, St John's Wood, London
• St John's Hospital, Stone, Buckinghamshire, England
• Hospital of St John Baptist without the Barrs, Lichfield, England

United States

• Saint John's Health Center, Santa Monica, California
• St. John's Hospital Camarillo, Camarillo, California
• St. John's Regional Medical Center (California), Oxnard, California
• St. John's Riverside Hospital, Yonkers, New York
• St. John's Hospital (Springfield, Illinois)
• Ascension St. John Hospital, Detroit, Michigan
• St. John's Hospital (Maplewood, Minnesota)
• St. John's Regional Medical Center (Missouri), Joplin, Missouri
• University Hospitals St. John Medical Center, Westlake, Ohio
• St. John Medical Center, Tulsa, Oklahoma
• St. John's Health, Jackson, Wyoming