Sydney Adventist Hospital, commonly known as the San, is a large private hospital in Sydney, Australia, located on Fox Valley Road in Wahroonga. Today, with 352 licensed overnight beds, it is the largest single campus private hospital in NSW and was the first private hospital in NSW to be accredited by the Australian Council on Healthcare Standards. In 2006 the San won the prestigious national Australian Private Hospital Award for Clinical Excellence (70 beds and over). The San also become home to the Southern Hemisphere’s first Dual Source Computerised Tomography Scanner in the same year.

SAH also offers a large range of outpatient services, including physiotherapy, cardiac rehabilitation, pathology, radiology, ultrasound (including San Ultrasound for Women), nuclear medicine, wound care, radiation oncology, dietitian services, and an on-site family medical and dental centre.

On-site accommodation is available at Jacaranda Lodge for outpatients, family members who live far from the hospital, and others looking for low-cost accommodation. Jacaranda Lodge also houses the extensive Cancer Support Centre and services.

The San Clinic opened in 2003 adjacent to the hospital, and provides access to over 100 specialists in a range of medical and surgical fields. Sydney Adventist Hospital also owns two other hospitals. The San Day Surgery Hornsby is a stand-alone day surgery facility located near Hornsby Hospital. In July 2010, Dalcross Adventist Hospital (formerly Dalcross Private Hospital) was purchased in nearby Killara. Dalcross has over 50 beds and offers ophthalmic, vascular, spinal and other surgical services.