Cognomen Wong Siew (Wong Siew 
) , throughout the world, is an extremely rare surname. The surname Wong Siew is characteristic of South-eastern Asia, particularly Malaysia, where it is an extremely rare surname. Predominantly, Wong Siew is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wong Siew | Malaysia, Singapore |
Li, Chen, Chew, Choo, Chun, Kaew, Kuan, Kitt, Peng, Phui, Lang, Lean, Ling, Lian, Ting, Ngoh, Ngit, Hung, Fong, Fung, Yung, Kiong, Chin, Chan, Sing, Ming, Men, Mei, Mee, Mun, Sim, Ang, Gek, Lan, Lee, Lim, Kwong, Lum, Ngo, Fan, Ing, Wah, Wen, Wei, Yee, Moon, Mooi, Meng, Tam, and Hoong