Burg Hohlach, Medieval castle ruins in Simmershofen, Germany

Burg Hohlach, also called Hohenloch, is a vanished medieval castle in Hohlach, part of Simmershofen. Its exact form and location are unknown: it may have been a bergfried, a residential tower or a motte, with or without moat and ring wall. A baroque manor house dated 1718 stands at the village's northern edge, probably not on the castle site.

A defensive tower was built between 1024 and 1039 under King Konrad II to protect a major trade route running from Frankfurt toward Rothenburg and Ochsenfurt. This early fortification became the foundation for a site that evolved over subsequent centuries.

The name Hohenlohe comes from Hohlach: Albert von Weikersheim first called himself "de Hohenloch" in 1178, and the name means "high-lying wood" (hohes Loh). The family kept the escort right on the trade roads around the Tauber valley until the 14th century. From 1645 the Enheim line Übel von Ehenheim died out and the estate passed to heirs.

The medieval castle itself has disappeared, and its exact location is unknown; it is presumed to have stood west of the church, where the later Festes Haus also vanished. The surviving baroque manor house, dated 1718, stands at the northern edge of Hohlach. Visitors can walk the village lanes to see the manor and the church area, but no castle remains are visible.

The name Hohlach probably means "high-lying wood" (hohes Loh). It first appears in 1178 as "Albertus de Hohenloch", when Adelbert von Weikersheim used the castle as his family name; his brother Heinrich followed from 1182 with the forms "Hohenlach" or "Holach".