Natural law and natural rights are contested categories among many modern Protestants, but were common legal and theological topics for their sixteenth-century forebearers. Early Protestant reformers echoed classical and scholastic teachings, and their natural law principles and natural rights overlapped with Catholic, humanist, and republican formulations in their day. But the reformers grounded their teachings in distinct accounts of the created order, human nature, the Ten Commandments, law and Gospel, divine sovereignty and natural order in the two kingdoms - giving their views a unique accent. This chapter samples the natural law and rights teachings of Martin Luther, Philip Melanchthon, the Magdeburg Confession, John Calvin, Christopher Goodman, and Johannes Althusius. They illustrate the hundreds of Protestant sources, by Lutherans and Calvinists, Anabaptists and Anglicans of various denominations. These teachings were a driving force of early modern Western democratic revolutionaries on both sides of the Atlantic; and influential in modern international declarations of rights, in the civil rights movement in the United States, and in various liberation movements in the Global South.