The Jeszenszky family or Jesenský (also Jessensky, Jessinsky, Jessensky de Gross Jessen) is the name of two old noble families in the Kingdom of Hungary. They have a mutual name but their origins are different.
Kisjeszen family
The first known ancestor of the Kisjeszen (Minor Jeszen) family was the castle warrior András Temérdek who received lands in Turóc County () from king Béla IV of Hungary in 1255. In the 14th century the family used the "Kisjeszeni" ("de Kisjeszen") name form and the Slovak variant of their name "Jeszenszky" came into use from the 15th century.