All over the world, สิรชัย (Sirachai 
, สิรชัย ) is a very rare dominantly male, but uncommonly female first name. The given name สิรชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare dominantly boy's, but infrequently girly name. Much less frequently, สิรชัย is the last name as well as the forename.