GBM

GBM may refer to:

Medicine

 * Glioblastoma multiforme, an outdated term for glioblastoma
 * Glomerular basement membrane

Science and technology

 * Gateway belief model, a model in psychology and the communication sciences
 * Geometric Brownian motion, continuous stochastic process where the logarithm of a variable follows a Brownian movement, that is a Wiener process
 * Gradient boosting, a machine learning technique
 * Generic Buffer Management, a graphics API
 * Gamma-ray Burst Monitor, aboard the Fermi Gamma-ray Space Telescope

Other uses

 * Grand Besançon Métropole, a French intercommunal structure
 * GBM (League of Legends player) (born 1994), Korean video gamer
 * Game Boy Micro, a 2005 handheld game console and the last model in the Game Boy line
 * Garbaharey Airport, in Somalia
 * Garhwali language
 * Grand Bauhinia Medal, an honour of Hong Kong
 * Greater Britain Movement, a short-lived far-right group
 * Green Belt Movement, a Kenyan environmental organisation