Sun (/sʊn/) is a transliteration of a common Chinese surname (simplified Chinese: ; traditional Chinese: ; pinyin: Sūn). Other transliterations include Suen (Hong Kong and regions with Cantonese-speaking populations), Sen (Amoy dialect), Sng (Teochew), Tôn (Vietnam), Son (Japan/Korea), Soon (regions with Hokkien-speaking populations), Suan (Philippines), and Swen.
Note that in Hong Kong and regions with Cantonese-speaking populations, the surname Xin (辛) is also transliterated as Sun.