Medieval Latin was the form of Latin used in the Middle Ages. It was mostly used by scholars and as the liturgical language of the medieval Roman Catholic Church, but also as a language of science, literature, and administration.

Despite the clerical origin of many of its authors, Medieval Latin should not be confused with Ecclesiastical Latin. There is no real consensus on the exact tr that Late Latin ends and Medieval Latin begins. Some scholars have their surveys of it begin with the rise of early Christian Latin in the mid-4th century, but others have around the year 500.