Surname Athr (اطهر 
, Athr 
, آثر 
) , around the world, is a rare cognomen. The last name Athr is habitual in Egypt, where it is a rare surname, Iran, and Saudi Arabia, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Egypt, Iran, and Pakistan. More prevalently, Athr is the forename as well as the last name.