Hubert von Grashey (30 October 1839 – 24 August 1914) was a German psychiatrist born in Grönenbach.
He studied medicine at the Universities of Würzburg, Vienna and Berlin, earning his doctorate in 1867.
Following graduation he worked under Gudden at the "Kreis-Irrenanstalt" (district mental asylum) in Werneck.
After the death of his father-in-law in 1886, he relocated to Munich, becoming head of the Upper Bavarian Kreis-Irrenanstalt.
In 1896 he replaced Joseph von Kerschensteiner (1831–1896) in the Ministry, subsequently becoming chief medical officer and chair of the Bavarian Obermedizinalausschuss.