Iuliu Ha?ieganu (April 14, 1885 in Dârja, Cluj County – September 4, 1959 in Cluj) was a Romanian internist doctor particularly recognized for research done in the field of tuberculosis.
He founded in Cluj a valuable school of internal medicine.
Today, Cluj University of Medicine and Pharmacy bears his name.
He was a member of the Romanian Academy and brother of politician Emil Ha?ieganu.