Iltis may refer to:
- Ana S. Iltis, a philosophy professor at Wake Forest College
- Fred Iltis (1923-2008), an entomologist at San Jose State University, son of Hugo Iltis
- Hugh Iltis (1925-2016), a botanist at the University of Wisconsin–Madison, son of Hugo Iltis
- Hugo Iltis (1882-1952), a Czech-American biologist and professor at Mary Washington College
See also
edit- Delias iltis, a butterfly
- German torpedo boat Iltis, a 1920s German ship
- SMS Iltis, a late 1800s German gunboat
- Volkswagen Iltis, a military vehicle