This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "William II of Weimar" – news · newspapers · books · scholar · JSTOR (February 2014) (Learn how and when to remove this message)

William II the Great (c. 940/945 – 24 December 1003) was Count of Weimar from 963 and Duke of Thuringia from 1002.

He was the eldest son of Count William I of Weimar.

Family

By an unknown wife, he had children: