Surname จิรัช (จิรัช 
, Jirach 
, Jirash 
) , across the world, is a rare family name. The last name จิรัช is habitual in Thailand, where it is a very rare surname, Mexico, and Malaysia. In absolute terms, it most frequently occurs in Mexico, Thailand, and the United States. Likewise, จิรัช is the forename as well as the last name.