Schloss Eltershofen, Medieval château in Schwäbisch Hall, Germany.

Schloss Eltershofen is a château in Schwäbisch Hall with a rectangular floor plan marked by fortified railings and corner bastions. The property sits within a moated fortified perimeter that provides defensive protection.

A castle at Eltershofen was first mentioned in 1298, held by the noble Eltershofen family. When the line died out in 1516, heirs sold it for 522 gulden to Schwäbisch Hall citizen Rudolph Nagel, whose family took the name Nagel von Eltershofen. On 3 April 1525 rebellious peasants seized the castle without resistance and forced Nagel to join them; the castle survived the defeat at Gottwollshausen the next day. In the 17th century Hall patricians rebuilt it as a pleasure castle.

The alliance coats of arms of Engelhard-Seiferheld (1719) and Engelhard-Bonhoeffer (1744) are set into the wall beside the portal, recalling the Hall city steward Sanwald von Sonnenwald and the Bonhoeffer family. The Nagel family, buyers in 1516, took the name "Nagel von Eltershofen" from the estate.

The castle stands on a terrace ringed by a moat, with corner bastions and parapet walls; the entrance gate hall is reached over a bridge. Since 1896 it has belonged to the Counts of Westerholt and is private, so it can only be viewed from outside.

The 1525 Peasants' War reached the castle on 3 April, when rebels took it without resistance and forced lord Rudolph Nagel to join their band. Their defeat came the next day at Gottwollshausen, yet the castle itself survived undamaged.