Cognomen Caar (Caar 
) , in all the world, is a very rare last name. The last name Caar is characteristic of Algeria, where it is a rare surname, Colombia, where it is a very rare surname, and Spain, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Algeria, Colombia, and Mexico. Also, Caar is the forename as well as the last name.