Niels Hemmingsen (Nicolaus Hemmingius) (Taagerup 1513-Roskilde1600) was a Danish Lutheran theologian. He studied at the University of Wittenberg 1537 to 1542 under Melanchthon. Returning to Denmark, he became a prolific author of works in Latin. In 1574 he published Syntagma institutionum christianarum, but was obliged to retract it in 1576 following pressure from Augustus I of Saxony to suppress Crypto-Calvinism.[1]