Family name Kempi (Kempi 
, Кемпи 
) , in all the world, is a rare surname. The cognomen Kempi is habitual in Northern Europe, particularly Estonia, where it is quite a rare surname, Finland, where it is a rare surname, and Sweden. Not in comparison with a country's population, it is the most numerous in India, Estonia, and Russia. More prevalently, Kempi is the forename as well as the last name.