Last name Rahan (Rahan 
, Рахан 
) , around the world, is quite a common family name. The last name Rahan is characteristic of Western Asia, particularly Oman, where it is quite a rare surname, Qatar, and Saudi Arabia. Measured by absolute frequency, it is the most numerous in Bangladesh, India, and Saudi Arabia. Likewise, Rahan is the forename as well as the last name.