Cognomen Slou (Слу 
, Slou 
) , around the globe, is a very rare surname. The last name Slou is habitual in Algeria, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Kyrgyzstan. In absolute terms, it is commonest in Algeria, Kazakhstan, and China. More prevalently, Slou is the forename as well as the last name.