Hornsby Ku-ring-gai Hospital is a hospital in Sydney, Australia, located on Palmerston Road in Hornsby. As a provider of care since 1933, the Hornsby Ku-ring-gai Hospital is a major metropolitan hospital, and is a teaching hospital of the University of Sydney. It provides hospital care for around 300,000 people living in the Hornsby Ku-ring-gai area. The Hornsby Ku-ring-gai Health Service also incorporates six Community Health Centres and ten Early Childhood Centres.
The hospital is under the control of the Northern Sydney Local Health District having previously been a part of the Northern Sydney Central Coast Area Health Service.
While much of the hospital is of a ramshackle design, the main building is a two storey circular design (named the Lumby Building for its benefactor), which forms the emblem of the hospital.