Franz Ambrosius Reuss (3 October 1761 – 9 September 1830) was a Czech geologist, mineralogist and balneologist.
Later on, he was hired by Prince Lobkowicz to serve as a spa physician in Bílina in northwestern Bohemia.
Here, he conducted investigations of the regions' mineral deposits, that included orographic and paragenetic studies of its highlands.
He was the author of a number of works on the composition, geology and utilization of mineral resources at Bílina, Františkovy Lázně, Libverda, Teplice, etc.
He was the author of a four-volume textbook on mineralogy, Lehrbuch der Mineralogie (1801-06), in which he gives a total account of Werner's ideas.