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