Family name جانسو (Cansu 
, جانسو 
) , in the entire world, is quite a common last name. The cognomen جانسو is habitual in Turkey, where it is quite a rare surname, Switzerland, where it is a rare surname, and Bulgaria. In absolute terms, it most frequently occurs in Turkey, Germany, and Switzerland. More frequently, جانسو is the forename as well as the last name.