Wong (surname)

Wong
Family name
Region of origin	China, Bianjing, Hainan and Hong Kong
Related names	Vong, Huang, Wang, Heng

Wong is the Jyutping and Yale and Hong Kong romanization of the Chinese surnames Huang (simplified Chinese: 黄; traditional Chinese: 黃) and Wang (Chinese: 王), two ubiquitous Chinese surnames; Wang (Chinese: 汪), another common Chinese surname; and a host of other rare Chinese surnames, including Heng (simplified Chinese: 横; traditional Chinese: 橫), Hong (Chinese: 弘), Hong (simplified Chinese: 闳; traditional Chinese: 閎), and Hong (Chinese: 宏)

Note that, while 汪 could be distinguished by its tone, 黃 (Wong/Huang) and 王 (Wong/Wang) are homophones in Cantonese. To differentiate the two in conversation, 黃 (Wong/Huang) is customarily referred to by native Cantonese speakers as 黃河的黃 (Yellow River Wong), 黃金的黃 (yellow gold Wong), "big belly Wong" (as the character resembles a person with a big belly), or by native Mandarin speakers as "grass-head Wong" (due to its first radical), whereas the 王 (Wong/Wang) is referred as the "three-stroke Wong" (due to its prominent 3 horizontal strokes) or the 'King' Wong (due to its meaning).

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Wikipedia