The article presents the life and achievements of Doctor Antonio Grossich, the head of the Department of surgery and gynecology of the Civic hospital in Rijeka. He wrote several literary works, but deserves to be remembered for his clinical and experimental work on antiseptic and aseptic procedure. He introduced the method of painting the operative field with 10% iodine tincture at first in traumas, then in general surgery. The method, for its rapidity, efficacy and not expensive had soon a worldwide success. He also participated actively in the political life of Rijeka before and after the World War I.