Last name Naici (乃慈 
, Naici 
) , all over the world, is a very rare cognomen. The cognomen Naici is habitual in Venezuela, where it is a very rare surname, Turkey, where it is an extremely rare surname, and Germany. Not in comparison with a country's population, this name is the most popular in China, Turkey, and Mexico. More prevalently, Naici is the forename as well as the last name.