Fallstein-Gymnasium, Secondary school in Osterwieck, Germany

Fallstein-Gymnasium is a public Gymnasium in Osterwieck, Saxony-Anhalt, run by the Harz district. Its campus pairs a listed old building from 1897 with a new building by architect Helmut Urbisch, opened for the 1994/95 school year. The school has 19 classrooms and 12 specialized rooms.

The school was founded in 1991 following German reunification and initially occupied four separate locations across the Harz district. The oldest building on the current site dates to 1897 and was later incorporated into the expanded campus.

The school's name refers to the Fallstein ridge, and its listed old building of 1897 stands beside Helmut Urbisch's 1994 new building, forming one campus. Since 1998/99 it has operated as a Ganztagsschule, with lessons running across the whole day. From 2023/24 catchment areas were planned covering the primary school towns of Stapelburg, Badersleben, Hessen, Bühne, Osterwieck, Langeln and Heudeber.

The campus sits at the junction of the 1897 listed building and Helmut Urbisch's 1994 new building, with 19 classrooms and 12 subject rooms. It is a working school, so visits are limited to the exterior during school hours. The site lies in Osterwieck in the Harz district of Saxony-Anhalt.

The listed old building dates from 1897 and carries monument number 094 05341 in Osterwieck's register of cultural monuments; the modern school building by architect Helmut Urbisch opened next to it in the 1994/95 school year.