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, wikt:罗 is much more common among Chinese people. According to the Cantonese pronunciation, it can also refer to 盧.
In Cantonese, 罗/羅 is usually romanized as Lo and Law. In Teochew, 罗/羅 is most commonly transliterated as Low while in the Hokkien dialect it is romanized as Loke. In North Korea, 羅 is transcribed as 라 (Ra) and South Korea is transcribed as 나 (Na). In Vietnam, the name 羅 is pronounced La.
It is the 75th name on the Hundred Family Surnames poem.[1]