Last name بيرتى (Bertie 
, بيرتى) , worldwide, is quite a rare surname. The last name بيرتى is characteristic of Saint Kitts and Nevis, where it is quite a common surname, Trinidad and Tobago, where it is quite a rare surname, and the United Kingdom, where it is a rare surname. Measured by absolute frequency, it is commonest in the United Kingdom, the United States, and Brazil. More frequently, بيرتى is the forename as well as the last name.