Last name サガン (Sagan 
, サガン 
) , in all the world, is quite a common family name. The family name サガン is habitual in Eastern Europe, particularly Poland, where it is quite a rare surname, Slovakia, and Czechia. Measured by absolute frequency, this name is the most popular in Poland, the United States, and Philippines. More prevalently, サガン is the forename as well as the last name.