Surname Nalby (Нальбий 
, Nalby 
) , across the world, is a very rare last name. The last name Nalby is characteristic of Norway, where it is a rare surname, Israel, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Norway, Israel, and Russia. Much more frequently, Nalby is the forename as well as the last name.