Weinsberg is a town in the north of the state of Baden-Württemberg in Germany. It was founded around 1200 and is situated in the Heilbronn district. The town has about 11,800 inhabitants. It is noted for its wine.

The siege of Weinsberg took place in 1140 in Weinsberg, in the modern state of Baden-Württemberg, Germany, which was then part of the Holy Roman Empire. The siege was a decisive battle between two dynasties, the Welfs and the Hohenstaufen. The Welfs for the first time changed their war cry from "Kyrie Eleison" to their party cries. The Hohenstaufen used the 'Strike for Gibbelins' war cry.