Cognomen Jankos (Jankos 
) , in the entire world, is a rare last name. The family name Jankos is characteristic of Poland, where it is a rare surname, Australia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Poland, the United States, and Australia. Also, Jankos is the forename as well as the last name.