Surname สุธีรศักดิ์ (สุธีรศักดิ์ 
, Sutheerasak ) , globally, is a rare family name. The last name สุธีรศักดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, สุธีรศักดิ์ is the forename as well as the last name.