Last name ג'מה (Gemma 
, Jemma , ג'מה 
) , in all the world, is a common family name. The last name ג'מה is characteristic of Spain, where it is quite a common surname, Reunion, and Italy, where it is quite a rare surname. In absolute terms, it is commonest in Spain, Mexico, and Italy. More frequently, ג'מה is the forename as well as the last name.