MBL

MBL may refer to:

Education

 * Marine Biological Laboratory, an international center for research and education in biology, biomedicine, and ecology
 * Master of Business and Law, a two-year master's degree credential
 * National Security College (Israel)

Politics

 * Free Bolivia Movement (Spanish: Movimiento Bolivia Libre), a political party in Bolivia
 * Free Brazil Movement (Portuguese: Movimento Brasil Livre), a libertarian Austrian-school inspired political movement in Brazil

Science

 * Mannan-binding lectin (or mannose-binding lectin), a protein capable of binding certain sugars and polysaccharides
 * Many-body localization, a state of matter in which a local set of particles cannot reach thermal equilibrium
 * Monoclonal B-cell lymphocytosis, a condition that resembles chronic lymphocytic leukemia (CLL)

Sport

 * Malaysian Basketball League, former name of the Malaysia National Basketball League, the pre-eminent men's basketball league in Malaysia
 * Midwest Basketball League, a semi-professional men's basketball league which operates in the Midwestern United States

Transportation

 * Manistee County-Blacker Airport (IATA/FAA code MBL), an airport in the US state of Michigan
 * Montclair-Boonton Line, a commuter rail line in North Jersey in the US state of New Jersey
 * Montebello Bus Lines, a local transit agency serving the San Gabriel Valley in Southern California

Other uses

 * Marie Byrd Land, region of West Antarctica
 * Macquarie Bank Limited, name of the Macquarie Group (a publicly traded Australian financial-services corporation) prior to its restructuring in 2007