Surname スレイ (Sulej 
, Slay 
, Sleigh 
) , throughout the world, is quite a common cognomen. The surname スレイ is characteristic of Poland, where it is quite a rare surname, Ghana, and North Macedonia. In absolute terms, the name is most common in the United States, Poland, and the United Kingdom. Likewise, スレイ is the forename as well as the last name.