Haerdtl
Haerdtl is the family name of the following people:
- Eduard von Haerdtl (1861–1897), Austrian astronomer
- Guido von Haerdtl (1859–1928), Austrian administrative officer and interior minister
- Hugo Haerdtl (1846–1918), Austrian sculptor
- Oswald Haerdtl (1899–1959), Austrian architect
See also: