Emerich Ullmann (23 February 1861 – 1937) was an Austrian surgeon who was a native of Pécs. In 1884, he received his doctorate in Vienna, and afterwards worked in the surgical department of Theodor Billroth (1829–1894). Briefly, he worked as was an assistant to Louis Pasteur (1822–1895) in Paris, where he was involved with research of antisera against rabies. In 1885, he returned to the University of Vienna at the first department of surgery. Ullmann was a pioneer of renal transplantation research. In 1902, he performed the first successful renal autotransplantation in a dog. Reportedly, the k