Heinrich Hlasiwetz (7 April 1825 – 7 October 1875) was an Austrian chemist born in Reichenberg, Bohemia.

[1][2][3] Son of a pharmacist, he studied at the University of Jena, where his instructors included Johann Wolfgang Döbereiner (1780-1849), Heinrich Wilhelm Ferdinand Wackenroder (1798-1854) and Matthias Jakob Schleiden (1804-1881).

In 1848 he earned the diploma of Magister Pharmacia, and during the following year received his doctorate in chemistry.

In 1849 he began work as an assistant to Friedrich Rochleder (1819-1874), later becoming an associate professor of chemistry at the University of Innsbruck (1854).

In 1867 he became a professor at the Vienna University of Technology, where from 1869 he represented general and analytical chemistry.