Many people have the surname Zahn: Zahn is also the German word for tooth.

Timothy Zahn (1951- ), American science fiction novelist

Paula Zahn (1956- ), American newscaster.

Steve Zahn (1967- ), American actor

Johann Zahn (1631-1707), German canon who wrote on the camera obscura and who invented an early camera.

Zahn cup, viscosity measuring instrument common in paint industries.

Theodor Zahn (1838 - 1933), German biblical scholar

Peter von Zahn, (1913 – 2001), German author, filmmaker, and journalist

Joe Zahn owner of Zahn's Airport North Amityville, New York (closed 1980)

Zahn's construct, a structured programming construct; first described in 1974 by Charles T. Zahn.

Zahn's Airport North Amityville, New York (AYZ closed 1980)