Geisenhausen is a municipality with market town status in the district of Landshut, in Bavaria, Germany.

It is situated 14 km southeast of Landshut in the valley of the Kleine Vils.

The parish church St. Martin from the second half of the 15th century is a brick building in gothic style similar to its larger namesake in Landshut.

Historic middle-class houses line part of market square and main road.

The Bundesstraße 299, an important road, bypasses the market town.