Cognomen बिरबल (Birbal 
, बिरबल) , throughout the world, is quite a rare family name. The last name बिरबल is characteristic of Trinidad and Tobago, where it is quite a common surname, Nepal, where it is quite a rare surname, and Qatar. In absolute terms, the name is most common in India, Nepal, and Trinidad and Tobago. Predominantly, बिरबल is the forename as well as the last name.