Iuliu Hațieganu (April 14, 1885 – September 4, 1959) was a Romanian internist doctor particularly recognized for research done in the field of tuberculosis.

His outstanding merits and Puryesz's vision helped Iuliu Hațieganu to become professor of medical clinic at the University of Cluj and first dean of the Faculty of Medicine between 1919 and 1920.

Along with one of his students, Professor Ion Goia, Hațieganu developed pathological model theory of peasants and workers, these patients being hospitalized preferentially because they claim better teaching.

Iuliu Hațieganu founded the University of Medicine and Pharmacy in Cluj, that exists today, and bears his name since 1993, and was a member of the Romanian Academy.

At 34 years he held his first university lecture in Romanian language in Transylvania, "Catarrhal jaundice problem", through which he laid the foundations of medical higher education in Cluj.

Iuliu Hațieganu Sports Park, on the shore of Someș River and with an area of 25 ha, was dedicated to the memory of his only child, dead at only 8 years.

With the establishment of communism, the new political situation affected both Hațieganu and his collaborators, many being dismissed under the pretext of so-called "popular judgments".