Johann Czermak
Johann Czermak is the name of the following people
- Johann Czermak (zoologist) (1824–1903), Austrian zoologist, educator and headmaster as well as university professor
- Johann Czermak (pilot) ( Hans Czermak ; 1896–1928), German pilot, officer and fighter pilot
- Johann Nepomuk Czermak (1828–1873), Austrian physiologist