Frederick William II (German: Friedrich Wilhelm II.) was King of Prussia from 1786 until his death. He was in personal union the Prince-elector of Brandenburg and (via the Orange-Nassau inheritance of his grandfather) sovereign prince of the Canton of Neuchâtel. Pleasure-loving and indolent, he is seen as the antithesis to his predecessor, Frederick II. Under his reign, Prussia was weakened internally and externally, and he failed to deal adequately with the challenges to the existing order posed by the French Revolution. His religious policies were directed against the Enlightenment and aimed at restoring a traditional Protestantism. However, he was a patron of the arts and responsible for the construction of some notable buildings, among them the Brandenburg Gate in Berlin.
On 16 November 1797, Frederick William II died in Potsdam. He was succeeded by his son, Frederick William III, who had resented his father's lifestyle and acted swiftly to deal with what he considered the immoral state of the court. Frederick William II is buried in the Berliner Dom.