Surname 古斯特 (Guste 
, 古斯特 
) , throughout the world, is a rare cognomen. The last name 古斯特 is habitual in Latvia, where it is quite a rare surname, Lithuania, where it is a rare surname, and Philippines. Measured by absolute frequency, the name is most common in Philippines, Latvia, and the United States. Also, 古斯特 is the forename as well as the last name.