Hornstein

Hornstein may refer to:

• Hornstein (rock), a silicate-rich chemical sediment and one of the siliceous rocks
• Hornstein (surname)
• Hornstein, Austria, Burgenland
• 6712 Hornstein (1990 DS1), a Main-belt Asteroid (f. 1990)
• von Hornstein, name of a family of imperial knights in the south of Germany, near Riedlingen