Last name ไหว้ (Wai 
, Wairoh 
, ไหว้) , worldwide, is a prevalent cognomen. The surname ไหว้ is habitual in Mongolia, where it is a prevalent surname, Myanmar, and Malaysia, where it is a common surname (explore the name in all countries). In absolute terms, it most frequently occurs in Myanmar, India, and Malaysia. Also, ไหว้ is the forename as well as the last name.