JMB may refer to:
People John Moses Browning, Mormon small arms architect José Manuel Barroso, a European politician José María Balcázar, Peruvian politician and lawyer Jorge Mario Bergoglio, an Argentine Roman Catholic cardinal also known as Pope Francis Jean-Michel Basquiat, American artist Jean-Michel Byron, South African musician
Organisations JMB Realty, a Chicago real estate company Jamaat-ul-Mujahideen Bangladesh, Islamist militant terrorist organization Joint Matriculation Board (earlier known as the Northern Universities Joint Matriculation Board), a body in the United Kingdom which awarded O levels and A levels The JAL Mileage Bank, the frequent flyer program of Japan Airlines Johnson Matthey Bankers, the core of a 1984 banking crisis JMicron, a technology company. Linux reports their devices as JMB363 or similar James M. Bennett High School, in Salisbury, Maryland Journal of Molecular Biology, a weekly scientific journal JMB Racing, a Monegasque racing team Jorhat Municipal Board, an Indian municipal board