Cognomen 隆隆 (Longlong 
, 隆隆 ) , throughout the world, is a rare surname. The last name 隆隆 is habitual in Hong Kong, where it is a rare surname, Myanmar, and Singapore. Not in comparison with a country's population, this name is the most popular in China, Myanmar, and Hong Kong. More prevalently, 隆隆 is the forename as well as the last name.