Ostfildern is a town in the district of Esslingen in Baden-Württemberg in southern Germany. It is located approximately 8 km southeast of Stuttgart. It was formed in 1975 out of a fusion of the previously separate boroughs of Nellingen (including Parksiedlung), Ruit, Kemnat and Scharnhausen and currently has approximately 37,000 inhabitants.
Ostfildern is situated in the east of the Filder area, a fertile plateau south of Stuttgart. It is bordered to the south by the Körsch river, which flows into the Neckar.
The town of Ostfildern was formed on 1 January 1975 from the fusion of the formerly independent boroughs of Nellingen, Ruit, Kemnat and Scharnhausen.
From 1945-1992 the U.S. Army operated Nellingen Kaserne as a barracks and airfield. The site has since been redeveloped as Scharnhauser Park.
A well-known inhabitant of Ostfildern is Abdul Ahad Momand, who was the first Afghan in space and who got asylum in Germany following the withdrawal of Soviet forces from Afghanistan.
The town is twinned with Reinach (Switzerland), Montluel (France), Poltava (Ukraine), Bierawa (Poland), Mirandola (Italy) and Hohenems (Austria).