Cognomen ภัทรธีรา (ภัทรธีรา 
, Pattarathira ) , in all the world, is an extremely rare family name. The surname ภัทรธีรา is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, ภัทรธีรา is the forename as well as the last name.