Cognomen ลอ (Lo 
, ลอ 
, Lorlohakarn ) , all around the world, is a widespread family name. The cognomen ลอ is habitual in Hong Kong, where it is a prevalent surname, Macao, where it is a widespread surname, and Bermuda (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Hong Kong, Senegal, and China. Much less frequently, ลอ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lo | Hong Kong, Myanmar, Senegal, Indonesia, China |
| Lorlohakarn, ลอ | Thailand |
โป, ยงพันธุ์, เวทมนต์, ตินานพ, ศาลาวงศ์, เย็นเปรม, จันทินมาธร, and ลิขิตตระกูลวงศ์