Last name Lahei (Lahei 
, Лахей 
) , around the world, is a very rare cognomen. The last name Lahei is habitual in Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Russia, Belarus, and India. Much less frequently, Lahei is the forename as well as the last name.