Surname سلى (سلى 
, Slee 
) , throughout the world, is quite a rare last name. The cognomen سلى is habitual in Australia, where it is quite a rare surname, the United Kingdom, and New Zealand. Not in comparison with a country's population, it most frequently occurs in the United Kingdom, the United States, and Australia. Much less frequently, سلى is the forename as well as the last name.