Oberschleißheim is a municipality in the district of Munich, in Bavaria, Germany. It is located 13 km north of Munich. As of 2005 it had a population of 11,467.
Oberschleißheim is best known for the Schleissheim Palace and the Flugwerft Schleissheim next to the airport housing the airplane department of the German Museum. The airfield is also home to one of the five German Federal Police helicopter squadrons. Established in 1912, the airfield was the first in Bavaria.
During World War II, a subcamp of Dachau concentration camp was located here.
In the early 20th century, Schleißheim was home to author Waldemar Bonsels, who was inspired to write his "Biene Maja" by a gnarly tree in the woods nearby.