Main Page | See live article | Alphabetical index OMB is a TLA which may stand for: observation manipulation bell Office of Management and Budget United States Office of Management and Budget (many other govts have an office of this name also) Offshore Model Basin Olympia Master Builders omb.org Olympiade Mathématique Belge Ontario Municipal Board Opportunity Microfinance Bank Oregon Marching Band Our Miss Brooks OMB Electronic Systems S.A. has operations in Spain and Florida. omb.com "OMB" or "Omb" may also appear as an abbreviation for ombudsman. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.