Last name สิงหศักดิ์ (Singhasak 
, สิงหศักดิ์ ) , across the world, is a rare surname. The family name สิงหศักดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, สิงหศักดิ์ is the forename as well as the last name.