Family name Kertis (Kertis 
, Кертіс 
) , globally, is a rare last name. The family name Kertis is habitual in Croatia, where it is a rare surname, Cameroon, and Czechia. Not in comparison with a country's population, it most frequently occurs in the United States, Cameroon, and Brazil. Also, Kertis is the forename as well as the last name.