Schloss Mariakirchen is a water castle in Hofmarkt Mariakirchen, Arnstorf, Landkreis Rottal-Inn, Bavaria, Germany. It was built in 1550 by Georg von Closen and Barbara von Notthafft.
The castle is a registered historic building and is now mostly used as a venue for events.
About 100 yards away, a hotel building (Schlossparkhotel Mariakirchen) was erected in 2007.<sup></sup> A Bavarian restaurant with beergarden is situated In front of the entrance.