Johann Ritter von Oppolzer (4 August 1808 – 16 April 1871) was an Austrian physician born in Nové Hrady, Bohemia.
In 1863, he was elected a foreign member of the Royal Swedish Academy of Sciences.
Oppolzer was an advocate of holistic diagnostics and therapy in his approach to medicine.
He was also an important influence in the career of renowned otologist Adam Politzer.
This biographical article related to medicine in Austria is a stub.