See also: yiu English Proper noun Yiu (plural Yius) A surname from Chinese. Statistics According to the 2010 United States Census, Yiu is the 23899th most common surname in the United States, belonging to 1056 individuals. Yiu is most common among Asian/Pacific Islander (96.69%) individuals. Anagrams YUI, YuiWikiwand - on Seamless Wikipedia browsing. On steroids.