Heinrich Friedrich Karl vom und zum Stein, commonly known as Baron vom Stein, was a Prussian statesman who introduced the Prussian reforms, which paved the way for the unification of Germany. He promoted the abolition of serfdom, with indemnification to territorial lords; subjection of the nobles to manorial imposts; and the establishment of a modern municipal system.

The Prussian Reform Movement was a series of constitutional, administrative, social, and economic reforms early in 19th-century Prussia. They are sometimes known as the Stein–Hardenberg Reforms, for Karl Freiherr vom Stein and Karl August von Hardenberg, their main initiators. German historians, such as Heinrich von Treitschke, saw the reforms as the first steps towards the unification of Germany and the foundation of the German Empire before the First World War.