Across the world, Sö (Sö 
) is quite a rare unisex first name. The first name Sö is characteristic of Northern Africa, particularly Algeria, where it is quite a rare unisex name, Egypt, where it is a rare principally girly, but scarcely boy's name, and Morocco, where it is a rare epicene name. Likewise, Sö is the last name as well as the forename.