Wichard von Alvensleben was a German agriculturist, Wehrmacht Officer, and Knight of the Order of Saint John. He was a member of the aristocratic House of Alvensleben, one of the oldest in Germany.

The Bailiwick of Brandenburg of the Chivalric Order of Saint John of the Hospital at Jerusalem, commonly known as the Order of Saint John or the Johanniter Order, is the German Protestant branch of the Knights Hospitaller, the oldest surviving chivalric order, which generally is considered to have been founded at Jerusalem in 1099.