Frederick I, Duke of Württemberg (d. 1608)
Friedrich I of Württemberg (19 August 1557 – 29 January 1608) was the son of George of Mömpelgard and his wife Barbara of Hesse, daughter of Philip I, Landgrave of Hesse.

Several references are made to him in Shakespeare's The Merry Wives of Windsor, in which a series of anti-German jokes start with a horse theft, several references are made to German travellers in England and to a German duke who is not expected to come to Windsor.