Cognomen ธัญญประภา (Thanyaprapa 
, ธัญญประภา , Tanyaprapa ) , all around the world, is a very rare family name. The last name ธัญญประภา is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ธัญญประภา is the forename as well as the last name.