Cognomen リク (Riku 
, リク ) , all over the world, is a common family name. The surname リク is habitual in Japan, where it is quite a common surname, Albania, where it is quite a rare surname, and Bangladesh, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Japan, Bangladesh, and Indonesia. More prevalently, リク is the forename as well as the last name.