Cognomen イブン (Maitham 
, イブン 
) , throughout the world, is quite a rare last name. The surname イブン is habitual in Western Asia, particularly Bahrain, where it is quite a rare surname, Iraq, and United Arab Emirates, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Iraq, Japan, and Bahrain. More prevalently, イブン is the forename as well as the last name.