Across the world, リユ (Rieu 
, リユ 
) is a very rare gender-neutral first name. The first name リユ is characteristic of France, where it is a very rare unisex name, Philippines, and Vietnam, where it is a very rare male name. Measured by absolute frequency, this name is the most popular in China, Philippines, and France. Much more prevalently, リユ is the last name as well as the forename.