Ulrich Zasius was one of the most important and influential jurists of the late Middle Ages. The aim of this thesis is to illustrate Ulrich Zasius outstanding significance and impact on jurisprudence, to describe his time as a professor of law, and to furthermore provide a comprehensive and detailed overview of Humanism. In the first chapter, I discuss Ulrich Zasius as a person; next to a detailed biography, I introduce his most popular and successful writings. Specifically, I extensively critique his most significant writing: the Freiburg Code of 1520. The second part of the thesis tackles Humanism; first, I outline the different eras of Humanism and the Renaissance, and continue with an analysis of humanistic jurisprudence and its development in other European countries, such as France, Germany, and the Netherlands, while ending with discussing three important representatives of this era, namely Erasmus of Rotterdam, Guillaume Budé, and Andreas Alciatus. In the third and final chapter, I examine Ulrich Zasius influence on his students as a professor of law, while also introducing some of his most famous and successful ones. I first provide an overview over the field of studies in the 15th and 16th century, before I specifically discuss Zasius teaching activity in Freiburg. The chapter ends with a concise selection of Ulrich Zasius most important students, whose life and writings I briefly describe. A conclusion constitutes the end of the thesis.