Frederick IV, Elector Palatine (1574-1610) was a German nobleman and a prominent figure in the Holy Roman Empire. He served as the Elector Palatine from 1583 until his death, playing a significant role in the politics of the region. Frederick IV was known for his support of the Protestant cause during a time of religious conflict in Europe. He was a member of the House of Wittelsbach and succeeded his father, Louis VI, Elector Palatine. Frederick IV's reign was marked by efforts to strengthen the Palatinate's influence and maintain stability amid the tensions between Catholics and Protestants. His leadership contributed to the ongoing development of the region during the late 16th and early 17th centuries.