O - P

OIRAOffice of Information and Regulatory Affairs

OMBThe Office of Management and Budget

OSCOrganization Seeking Certification

OSDOffice of the Secretary of Defense

OSD A&SOSD for Acquisition and Sustainment

OSD I&SOSD for Intelligence and Security

OSD R&EOSD for Research and Engineering

pDNSNSA Protective Domain Name System Service

POAMPlan of Action and Milestones

PPDPresidential Policy Directive

  • PPD 21Critical Infrastructure Security and Resilience

PTACProcurement Technical Assistance Center

PRAPaperwork Reduction Act