Family name Sanaj (Sanaj 
, Санай 
) , all over the world, is quite a rare cognomen. The surname Sanaj is characteristic of Azerbaijan, where it is quite a rare surname, India, where it is a rare surname, and Kazakhstan. Not in comparison with a country's population, it is the most numerous in India, Azerbaijan, and Thailand. More prevalently, Sanaj is the forename as well as the last name.