| Subject | English | Thesaurus |
| mil., abbr. | Air Force Junior Reserve Officer Training Corps | AFJROTC |
| abbr., scottish | Air Force Junior Reserve Officers Training Corps | AFJROTC (USAF) |
| mil., abbr. | Air Force Junior Reserve Officers' Training Corps | AFJROTC |
| mil., abbr. | Armed Services Procurement Planning Officer | ASPPO |
| mil., abbr. | Armed Services Production Planning Officer | ASPPO |
| abbr. | Child of Certain Veterans and Public Safety Officers Supplement Grant Program | CVO (4uzhoj) |
| mil., abbr. | Defense Value Engineering Services Officer | DVESO |
| abbr., scottish | Engineering Student Officer Program | ESOP (USAF) |
| abbr., scottish | Flight Special Services Officer | FSSO (US) |
| abbr. | http://www.worthpoint.com/worthopedia/russian-soviet-officer-tarpaulin-boots | tarpaulin boots (AnnaV) |
| abbr., mil. | Junior Commissioned Officer | JCO (smovas) |
| abbr., scottish | Junior Engineering Officer | Jengo (UK Royal Air Force) |
| abbr. | Junior Foreign Service Officers Club | JFSOC |
| mil., abbr. | Junior Naval Research Officers Training Corps | JNROTC |
| abbr. | junior officer | jo |
| mil., abbr. | Junior Officer Advisory Council | JOAC |
| mil., abbr. | Junior Officer Council | JOC |
| mil., abbr. | Junior Officer Maintenance Course | JOMC |
| abbr., scottish | Junior Officer Pilot | JOP (UK Royal Air Force) |
| abbr., scottish | Junior Officer Tactics Team | JOTT (US Navy) |
| abbr., scottish | Junior Officers Advisory Council | JOAC (USA) |
| mil., abbr. | Junior Officers' and Professional Association | JOPA |
| abbr. | Junior Police Officer | JPO |
| USA | Junior Reserve Officer Training Corps | JROTC |
| abbr., scottish | Junior Reserve Officers Training Corps | JROTC |
| mil., abbr. | Junior Reserve Officers' Training Corps | JROTC |
| telecom., abbr. | Junior Telecom Officer | JTO |
| mil., abbr. | Junior Watch Officer | JWO |
| mil., abbr. | Logistics Officer Program | LOP |
| mil., abbr. | Naval Junior Reserve Officer's Training Corps | NJROTC |
| mil., abbr. | Program Contracting Officer | PCO |
| abbr., scottish | Program Executive Office/Officer | PEO |
| abbr., mil., WMD | Program Executive Officer/Army Acquisition Executive | PEO/AAE |
| mil., abbr. | Program Executive Officer - Command and Control System | PEO-CCS |
| mil., abbr. | Program Executive Officer for Command, Control, Communications, Computers, and Intelligence | PEOC4I |
| abbr., mil., WMD | Program Executive Officer-Program Manager | PEO-PM |
| abbr., scottish | Program Executive Officer - Ship Defense | PEO-SD (USA) |
| abbr. | Retirement Services Officer | RSO |
| abbr. | School Services Officer | SSO |
| law, abbr. | Services Training Officers And Prosecutors | STOP |
| abbr., scottish | Signal Despatch Officer | SDO (British Army) |
| mil., abbr. | Special Operations Program Executive Officer | SOPEO |
