Cognomen หนูแก้ว (Rat 
, Ratkaew 
, หนูแก้ว) , around the world, is a common last name. The family name หนูแก้ว is characteristic of Romania, where it is quite a common surname, France, where it is quite a rare surname, and Oman. Measured by absolute frequency, the name is most common in Bangladesh, France, and Romania. Also, หนูแก้ว is the forename as well as the last name.