Last name G-A (G-A 
) , all over the world, is a rare cognomen. The last name G-A is habitual in Poland, where it is a rare surname, Colombia, where it is a very rare surname, and Spain. Measured by absolute frequency, it is commonest in Poland, France, and Colombia. Also, G-A is the forename as well as the last name. Parts of the name also exists independently as a first name G, and a first name A.