Hungarian botanist (1818-1896).
Frigyes Ákos Hazslinszky or in German version of his name Friedrich August Hazslinszky von Hazslin (Késmárk Kingdom of Hungary, Austrian Empire (now Slovakia), 6 January 1818 – Eperjes, Kingdom of Hungary, Austria-Hungary (now Slovakia), 16 September 1896) was a Hungarian mycologist and botanist. Upon completing his lyceum studies in Késmark (today Kežmarok, Slovakia), he studied philosophy, law, theology and chemistry, working concurrently as a teacher. After a stint as teacher in Debrecen and Sárospatak, and further studies in Vienna, he became professor of physics and mathematic at the Lu