Throughout the world, Mastr (Mast 
, Mastr 
) is a common boy's first name. The first name Mastr is characteristic of Saudi Arabia, where it is quite a rare mostly masculine, but seldom female name, India, where it is quite a rare boy's name, and Oman. In absolute terms, it is commonest in India, Pakistan, and Egypt. Likewise, Mastr is the last name as well as the forename.