OMB

OMB or omb may refer to:

Organizations Office of Management and Budget, the largest office within the Executive Office of the President of the United States OMB, a graphic design studio founded by Oscar Mariné Ontario Municipal Board, an independent administrative board in the province of Ontario, Canada Optical Media Board, a national agency under the Office of the President of the Philippines Oregon Marching Band, the marching band of the University of Oregon Oregon Medical Board, state agency responsible for establishing the rules and regulations for medicine

Other uses East Ambae language (ISO 639-3 code: omb), an Oceanic language spoken on Ambae, Vanuatu Olympiade Mathématique Belge, a mathematical competition for students in grades 7 to 12