Surname קארלו (Kaarlo 
, קארלו 
) , around the globe, is a very rare cognomen. The last name קארלו is habitual in Finland, where it is a rare surname, Spain, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Finland, China, and Spain. Predominantly, קארלו is the forename as well as the last name.