Cognomen スレイド (Slade 
, スレイド) , in all the world, is a common surname. The surname スレイド is habitual in Isle of Man, where it is quite a common surname, the United Kingdom, and New Zealand, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Australia. Much less frequently, スレイド is the forename as well as the last name.