Last name Semy (Semy 
, กึ่ง) , across the world, is quite a rare family name. The cognomen Semy is habitual in the Democratic Republic of the Congo, where it is quite a rare surname, Tunisia, where it is a rare surname, and Egypt. Measured by absolute frequency, it is commonest in the Democratic Republic of the Congo, India, and Indonesia. Likewise, Semy is the forename as well as the last name.