Jansky (surname)
Jánský is a Czech-language surname. Notable people with the surname include:
- Peter Jánský, Czech hockey player
- Jan Janský, Czech serologist, neurologist and psychiatrist, credited with the first classification of blood into the 4 types
- Markéta Jánská, Czech model
- Karl Guthe Jansky, American physicist, radio engineer and discoverer of radio waves emanating from the Milky Way