Family name ルー (Lu 
, Lou , Lew 
, along with others...) , all around the world, is a prevalent last name. The family name ルー is habitual in British Virgin Islands, where it is a widespread surname, Macao, and Cayman Islands (explore the name in all countries). In absolute terms, it is the most numerous in China, France, and Myanmar. Much less frequently, ルー is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lou, Lu, Rue, Lue, Luu | France, China, United States, Myanmar, Taiwan |
| Lew | France, Malaysia, China, United States, Myanmar |
| Roux | France, Malaysia, China, Vietnam, United States |
| Ruh | France, Malaysia, China, United States, South Africa |
| ルー | Japan |
| Lū | Myanmar, China |
Jo'Elle, Leroux, Leu, Lev, Lo, Loh, Loup, Loux, Lui, Luk, Lv, Lô, Lù, Lú, Lư, Lỗ, Lộc, Lục, Lữ, Lựu, Roo, Ruu, Rüh, Λου, Лев, Леру, Леў, Ли, Лу, Лью, Люй, Лёв, Лёва, Ру, לב, לו, לרו, رو, لو, لورو, ليف, ليو, লু, リュー, ルーク, レオ, レフ, レヴ, 列佛, 列夫, 利夫, 卢, 吕, 吕氏, 呂, 洛, 盧, 祿, 禄, 路, 逯, 陆, 陸, 魯, 鲁, and 鹿