Untergriesbach (Central Bavarian: Untagriasbo) is a municipality in the district of Passau in Bavaria in Germany.

Untergriesbach is located in the southern Bavarian Forest and extends high above the deep valley of the Danube.

Their successors were the Wessenberger who possessed an extended property as a fief of the Bishopric Passau.

In 1456 Bishop Ulrich of Nussdorf confirmed and extended the rights and freedoms of the market.

The late Gothic parish church of St. Michael was remodeled baroque in several stages during the 18th century.

In 1803 the market Griesbach came to Ferdinand III, Grand Duke of Tuscany (1769–1824) and 1806 to Kingdom of Bavaria.