Osthausen-Wülfershausen is a municipality in the Ilm district in Thuringia in Germany.

Osthausen is located around 14 kilometers east of Arnstadt and 20 kilometers south of Erfurt. The A 4 runs around ten kilometers north of the village and the A 71 runs around six kilometers to the west, which can be reached via the Arnstadt-Süd junction.

Two districts are managed for the municipality:

• Osthausen (397 inhabitants)

• Wülfershausen (179 inhabitants)

On May 16, 1968, the municipalities of Osthausen and Wülfershausen were merged to form the municipality of Osthausen-Wülfershausen.