Jansky (surname)

Jánský (less commonly spelled Janský) is a Czech-language surname. Notable people with the surname include:


 * Peter Jánský (born 1985), Czech hockey player
 * Jan Janský (1873–1921), Czech serologist, neurologist and psychiatrist, credited with the first classification of blood into the 4 types
 * Markéta Jánská (born 1981), Czech model
 * Karl Guthe Jansky (1905–1950), American physicist, radio engineer and discoverer of radio waves emanating from the Milky Way