Friedrich Petri
Friedrich Petri is the name of the following people:
- Friedrich Petri (1549-1617), German theologian and collector of proverbs, see Friedrich Peters (theologian)
- Friedrich Petri (engineer) (1817–1893), German engineer, senior government councilor and railroad president; Inventor of the speedometer for locomotives
- Friedrich Petri (philologist) (1866–1951), German philologist
- Friedrich Erdmann Petri (1776–1850), German theologian, teacher and author
- Friedrich Simon Leopold Petri (1775–1850), German civil servant and judge in the Principality of Lippe