OMB

OMB is a three-letter abbreviation which may stand for:

• Marine Modeling and Analysis Branch, formerly Ocean Modeling Branch, a U.S. weather & environment agency
• Office of Management and Budget, a group that oversees the activities of federal agencies in the United States
• Olympiade Mathématique Belge, the Belgian Mathematical Olympiad, a mathematical competition
• OMB, a graphic design studio founded by Oscar Mariné Brandi
• Ontario Municipal Board, a tribunal involved in municipal and planning matters in the province of Ontario, Canada
• OpenMicroBlogging, the standard that allows for micro-blogging services to interoperate
• Oregon Marching Band, the marching band for the University of Oregon in Eugene, Oregon, United States
• Organic Matter from Biomass, in agriculture
• Owner Managed Business, small and medium enterprises

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