Viktor Urbantschitsch (10 September 1847, Vienna – 17 June 1921, Vienna) was an Austrian otologist. He was the son of Dr. Alois Urbantschitsch and Wilhelmine Urbantschitsch.
He studied at the University of Vienna, receiving his medical doctorate in 1870 and his surgical degree in 1871. In 1873 he obtained his habilitation for otology and several years later was named head of the otology department at the general polyclinic in Vienna. In 1885 he became an associate professor and in 1907 succeeded Adam Politzer as head of the university ear hospital.
He is considered to be one of the founders of modern otology. He focused his attention on the physiology and psycho-physiology of the ear, and researched the influence that head movements had on sound perception. He stressed the significance of residual hearing and developed various diagnostic and rehabilitative methods. He was an early practitioner of electric current as a means of treatment, and also introduced a manual massage technique for the Eustachian tube,
Viktor had four children with his wife, Caroline Urbantschitsch.