Schloss Puchenau, Historical castle in Puchenau, Austria.

Schloss Puchenau is a castle in the Austrian municipality of Puchenau featuring a three-story courtyard structure with a grand entrance gate. The buildings form an incomplete rectangular layout complemented by additional service structures on the grounds.

Count Ernst Christoph Schallenberg built the castle as an administrative seat for his Upper Austrian estates; it never served a defensive purpose. The construction ruined him financially, and in 1693 he sold the castle and its Meierhof to Baron Augustin von Ehrhard, who obtained noble country-estate status for Puchenau in 1695. In 1752 Joseph Gundaker von Thürheim sold it to the innkeeper and brewer Reichart Arminger, after which it became a farmstead and lost its former manorial rights.

The castle serves as the municipal marriage hall for Puchenau, hosting weddings and cultural events for the local community. Residents and visitors use the space regularly for celebrations and gatherings throughout the year.

Schloss Puchenau stands on the Danube bank above the village at Karl-Leitl-Straße 1, reached through a stone gate portal. After the renovation completed in 2009 the building holds flats and business premises, and the municipal wedding room is inside. The former stables were destroyed by fire and never rebuilt, so the courtyard is not fully enclosed.

From 1713 onward, the Khueffstein family ran a water ferry service departing from the castle grounds that connected to the city of Linz. This crossing was an important transport link between the two communities for travelers.