| BCAP | Biomass Crop Assistance Program | unable to verify |
| BIP | Biofuel Infrastructure Partnership | unable to verify |
| DDPHSS | Deputy Director for Public Health Science and Surveillance | replaced by OPHDST - Office of Public Health Data, Surveillance, and Technology |
| EMMO | Office of Emergency Management and Medical Operations | unable to verify |
| ICS-CERT | Industrial Control Systems Cyber Emergency Response Team | retired |
| NGN PS | Next Generation Networks Priority Services | unable to verify |
| NIPP | National Infrastructure Protection Plan | unable to verify |
| OOR | Office of Operations and Resources | unable to verify |
| OSM | Office of Systems Management | unable to verify |
| RA | Office of Regional Affairs | changed to PC - Office of Policy Coordination |
| RMR | Research, Markets, and Regulations Division | changed to Research, Monitoring, and Regulations Division (same acronym) |
| RTECS | Registry of Toxic Effects of Chemical Substances | unable to verify |
| SOPD | Sector Outreach and Programs Division | unable to verify; likely changed to Sector Management |
| US-CERT | United States Computer Emergency Readiness Team | retired |
