The following is a list of all United States Government Departments and Agencies that start with “O”:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Oak Ridge National Laboratory
Occupational Safety and Health Administration (OSHA)
Occupational Safety and Health Review Commission
Ocean Energy Management, Bureau of
Office for Civil Rights, Department of Education | File A Discrimination Complaint
Office for Civil Rights, Department of Health and Human Services
Office of Career, Technical, and Adult Education
Office of Child Support Enforcement (OCSE)
Office of Community Planning and Development
Office of Compliance
Office of Cuba Broadcasting
Office of Disability Employment Policy (ODEP)
Office of Elementary and Secondary Education
Office of Environmental Management
Office of Fair Housing and Equal Opportunity (FHEO)
Office of Fossil Energy
Office of Government Ethics (OGE)
Office of Housing
Office of Investor Education and Advocacy
Office of Justice Programs
Office of Juvenile Justice and Delinquency Prevention
Office of Lead Hazard Control and Healthy Homes
Office of Management and Budget (OMB)
Office of Manufactured Housing Programs
Office of Minority Health
Office of National Drug Control Policy (ONDCP)
Office of Natural Resources Revenue
Office of Nuclear Energy
Office of Personnel Management (OPM)
Office of Policy Development and Research
Office of Postsecondary Education
Office of Refugee Resettlement
Office of Science and Technology Policy
Office of Scientific and Technical Information
Office of Servicemember Affairs
Office of Special Counsel
Office of Special Education and Rehabilitative Services (OSERS)
Office of Surface Mining, Reclamation and Enforcement
Office of the Comptroller of the Currency (OCC) | File A Complaint Against A Bank
Office of the Director of National Intelligence
Office of the Federal Register
Office of the Pardon Attorney
Ohio (State of)
Oklahoma (State of)
Open World Leadership Center
Oregon (State of)
Out-of-Service Debt Management Center
Overseas Private Investment Corporation