Luo (surname) Luo or Lo refers to the Mandarin romanizations of the Chinese surnames 羅 (Simplified Chinese: 罗, pinyin: Luó, Jyutping: Lo4) and 駱 (Simplified Chinese: 骆, pinyin: Luò, Jyutping: Lok3). Of the two surnames, 羅 is much more common among Chinese people.