KNB

KNB can refer to
 * KNB EFX Group, an American special effects company
 * Kanab Municipal Airport, an airport near Kanab, Utah
 * Kitanihon Broadcasting, a Japanese media company
 * National Security Committee of the Republic of Kazakhstan, also referred to as the NSC or KNB
 * Kalaallit Nunaanni Brugseni, a Greenlandic supermarket chain better known as Brugseni