Family name ตุ้ย (Tui 
, ตุ้ย, Tuuy) , globally, is quite a common cognomen. The last name ตุ้ย is characteristic of Fiji, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Estonia. Measured by absolute frequency, the name is most common in India, Malaysia, and Bangladesh. Also, ตุ้ย is the forename as well as the last name.