Cognomen Сун-Ок (Сун-Ок 
) , worldwide, is an extremely rare surname. The last name Сун-Ок is characteristic of Central Asia, particularly Kyrgyzstan, where it is a very rare surname. More frequently, Сун-Ок is the forename as well as the last name. Parts of the name also exists independently as a last name Сун, and a first name Ок.