| ACJ | Allied Council for Japan |
| AG | Adjutant General's Section |
| AFPAC | Army Forces in the Pacific |
| ATIS | Allied Translation and Interpreters Service |
| CAC | Country and Area Committee |
| CCD | Civil Censorship Detachment |
| CCS | Civil Communications Section |
| CHS | Civil Historical Section |
| CIE | Civil Information and Education Section |
| CINC | Commander in Chief |
| CIS | Civil Intelligence Section |
| CIS | Counter Intelligence Section |
| CLO | Central Liaison Office |
| CPC | Office of Civil Property Custodian |
| CTS | Civil Transportation Section |
| DS | Diplomatic Section |
| ESS | Economic and Scientific Section |
| FEAC | Far Eastern Advisory Commission |
| FEC | Far Eastern Commission |
| G-1,2,3,4 | General Staff-1,2,3,4 |
| GAS | General Accounting Section |
| GHQ | General Headquarters |
| GPA | General Procurement Agent |
| GS | Government Section |
| IMTFE | International Military Tribunal for the Far East |
| IPS | International Prosecution Section |
| JCS | Joint Chiefs of Staff |
| LS | Legal Section |
| NRS | Natural Resources Section |
| PHW | Public Health and Welfare Section |
| PRO | Public Relations Office |
| POLAD | Office of Political Advisors |
| PWC | Post-War Programs Committee |
| SCAP | Supreme Commander for the Allied Powers |
| SFE | Subcommittee for the Far East |
| SRS | Statistical and Reports Section |
| SWNCC | State-War-Navy Coordinating Committee |
Source: Takemae, Eiji. GHQ Tokyo: Iwanami Shoten, 1983
