Grynaeus may refer to: Johann Jakob Grynaeus (1540–1617), Swiss Protestant clergyman Samuel Gryneaus (1539–1599), Swiss jurist Simon Grynaeus (1493–1541), German scholar and theologian Simon Grynaeus the Younger (1539–1582), Swiss mathematician and university professor Simon Grynaeus (1725–1799), Biblical scholar and translator Thomas Grynaeus (1512–1564), Swiss Protestant clergyman