NBG

NBG may refer to:


 * Namibian Black German, a pidgin variant of the German language native to Namibia
 * Natal Border Guard, a military unit of the Colony of Natal during the Anglo-Zulu War
 * National Bank of Georgia
 * National Bank of Greece
 * Naval Air Station Joint Reserve Base New Orleans, by IATA airport code
 * NBG Radio Network, defunct American radio network based in Portland, Oregon
 * von Neumann–Bernays–Gödel set theory in mathematics
 * Nibong LRT station, Singapore, by LRT station abbreviation
 * Nordic Battle Group
 * North Bengal Grey cattle
 * Nuremberg, a city in Bavaria, Germany
 * Non-binary gender, a gender identity (also abbreviated as "NB")
 * Natural burial ground, a cemetery dedicated to natural burial
 * Bible Society for the Netherlands and Flanders (Nederlands-Vlaams Bijbelgenootschap)