BGK

BGK may refer to:

Businesses and organizations

 * Bank Gospodarstwa Krajowego, a Polish bank

Music

 * Beyoncé Giselle Knowles, an American singer

Science

 * Bernstein–Greene–Kruskal modes, a type of nonlinear electrostatic wave that propagates in a collisionless plasma
 * Bhatnagar–Gross–Krook operator, a collision operator used in Lattice Boltzmann methods
 * BgK, a neurotoxin found within the mucous secretions of sea anemones

Sports

 * Barangay Ginebra Kings, a professional Philippine basketball team