Surname นิรนัย (นิรนัย , Niranai ) , globally, is an extremely rare last name. Much more prevalently, นิรนัย is the forename as well as the last name.
Nirnay
ยศเกตุ, ดวงโสภา, เกิดเจริญ, and สกุลสันติพร
, Niranai 
) , globally, is an extremely rare last name. Much more prevalently, นิรนัย is the forename as well as the last name.