Family name Nguyen Thi (Nguyen Thi 
) , around the world, is quite a common cognomen. The last name Nguyen Thi is habitual in Macao, where it is quite a common surname, Vietnam, where it is quite a rare surname, and Singapore, where it is a rare surname. In absolute terms, it most frequently occurs in Vietnam, Macao, and Indonesia. More prevalently, Nguyen Thi is the forename as well as the last name.