Family name 阿因 (Arrin 
, 阿因) , all around the world, is a rare cognomen. The family name 阿因 is characteristic of Thailand, where it is a rare surname, Nicaragua, where it is a very rare surname, and Indonesia. Measured by absolute frequency, it most frequently occurs in Thailand, Indonesia, and Pakistan. More prevalently, 阿因 is the forename as well as the last name.