All around the world, หนูใจ (Ratjai 
, หนูใจ ) is a very rare dominantly girly, but uncommonly boy's first name. The first name หนูใจ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare dominantly female, but infrequently male name. Much less frequently, หนูใจ is the last name as well as the forename.