Last name โต้ย (Toi 
, โต้ย) , in all the world, is quite a common family name. The last name โต้ย is habitual in Macao, where it is quite a rare surname, Qatar, and Mauritius. Measured by absolute frequency, it is the most numerous in Algeria, Malaysia, and Vietnam. Likewise, โต้ย is the forename as well as the last name.