Haile Tesfaye Debas (born 1937) is an Eritrean physician and academic administrator at the University of California, San Francisco (UCSF).
His postgraduate training included a year as a research fellow at the University of Glasgow/Western Infirmary in Scotland and two years at UCLA as a Medical Research Council Scholar in gastrointestinal physiology.
After a year in private practice in the Yukon Territories and British Columbia, he joined the surgery faculty of the University of British Columbia from 1970 to 1980 and then served on the faculty of UCLA (1980–1985) and the University of Washington (1985–1987).
Debas was the founding Executive Director of UCSF Global Health Sciences (GHS) since its establishment in 2003 until the appointment of Jaime Sepulveda in 2011.
He is a fellow of the American Academy of Arts and Sciences and a member of the Institute of Medicine.