Cognomen โท้ย (Thoi 
, โท้ย) , all over the world, is quite a rare family name. The surname โท้ย is habitual in South-eastern Asia, particularly Singapore, where it is a rare surname, Vietnam, and Malaysia. Measured by absolute frequency, the name is most common in India, Vietnam, and Myanmar. Also, โท้ย is the forename as well as the last name.