Leopold Pfaundler von Hadermur (14 February 1839 – 6 May 1920) was an Austrian physicist and chemist born in Innsbruck.
He studied under chemist Heinrich Hlasiwetz (1825–1875) at Innsbruck, with Justus von Liebig (1803–1873) at the University of Munich, and with Henri Victor Regnault (1810–1878) and Charles Adolphe Wurtz (1817–1884) in Paris.
These included a temperature regulator (1863), a Stromkalorimeter (1869), a differential air thermometer (1875), a seismograph (1897) and a distance meter (1915), to name a few.
[4] In 1863–64 he performed a survey of the Stubaier Alps with Ludwig Barth zu Barthenau (1839–1890), and in 1864 he was the first person to ascend to the summit of the Hofmannspitze (3112m).
[5] He also published Müller-Pouillet's Lehrbuch der Physik und Meteorologie ("Johann Heinrich Jakob Müller–Claude Pouillet's textbook of physics and meteorology"), (9th edition, 1886–98, 3 volumes).