Cognomen Firdus (Firdus 
, Фирдус 
) , all over the world, is a rare last name. The family name Firdus is characteristic of Armenia, where it is quite a rare surname, Azerbaijan, and North Macedonia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Azerbaijan, India, and Malaysia. More frequently, Firdus is the forename as well as the last name.