Poříčí Castle, Cultural monument in Poříčí, Czech Republic.

Poříčí Castle stands on the northern edge of the village of Poříčí, part of Boršov nad Vltavou. It replaced a fortress first documented before 1379 and received most of its present form after the Thirty Years' War, when the České Budějovice Dominicans rebuilt it in Baroque style; late-18th-century Classical alterations followed. The grounds include an English park with a protected tulip tree at the southeast corner.

Poříčí is first recorded in 1379, when Bušek of Poříčí bought a mill at Boršov; his seat is presumed to have stood on the site. The fortress was burned during the Thirty Years' War, and the estate was given to the Dominican order of České Budějovice, which rebuilt it as a Baroque summer residence and added a brewery in 1674. Wenzl Danner gave the castle its Neoclassical form after buying it in 1787.

The name Poříčí refers to the village by the Vltava, and the castle brewery, founded by the Dominicans in 1674, produced beer for 111 years despite protests from České Budějovice brewers. Today the building houses thirteen private flats and the Na Zámečku community centre.

Poříčí Castle stands on the northern edge of the village of Poříčí, part of Boršov nad Vltavou, about 8 km south of České Budějovice. The building now holds thirteen private flats and the Na Zámečku community centre, so the interiors are not open to the public. The listed tulip tree stands by the south-east corner of the castle.

The castle's park, laid out by Vojtěch Lanna the Elder southeast of the building, centred on a pond with a heart-shaped island reached by a Japanese bridge; a protected tulip tree still stands at the southeast corner.