Nicolae Teclu (Romanian pronunciation: [niko'la.e 'teklu]); (11 October 1839, Kronstadt, Austrian Empire (today Bra?ov, Romania) – 13 July 1916, Vienna, Austria-Hungary) was a Romanian chemist, who gave his name to the worldwide-used "Teclu burner".
He studied engineering and architecture, and then chemistry, continuing his career by becoming professor for general and analytical chemistry in Vienna.
He also contributed substantially to the worldwide development of chemistry.