| ABI | Acquired Brain Injury |
| ABF | Activity Based Funding |
| ACI | Agency for Clinical Innovation |
| ADR | Alternative Dispute Resolution |
| BH | Boarding House |
| CID | Council Intellectual Disability |
| CJS | Criminal Justice System |
| CMH | Community Mental Health |
| CMO | Community Managed Organisation |
| COPMI | Children of Parents with Mental Illness |
| COAG | Council of Australian Governments |
| DCJ | Department of Communities and Justice |
| FaCS | Department of Family and Community Services |
| GD | Guardianship Division (NCAT) |
| ID | Intellectual Disability |
| ILC | Information, Linkages and Capacity Building (formerly Tier 2 NDIS) |
| IPHA | Independent Hospital Pricing Authority |
| ISC | Industry Skills Council |
| ISP | Integrated Services Program |
| JH | Justice Health and Forensic Mental Health Network |
| LAC | Local Area Coordinator (NDIS) |
| LGA | Local Government Area |
| LHD | Local Health District |
| MHA | Mental Health Australia |
| MHA | Mental Health Act 2007 (NSW) |
| MHAS | Mental Health Advocacy Service (Legal Aid) |
| MHC | Mental Health Commission of NSW |
| MHCC | Mental Health Coordinating Council |
| MHB | Mental Health Branch |
| MHPN | Mental Health Professionals Network |
| MHRM | The NSW Mental Health Rights Manual |
| MHRT | Mental Health Review Tribunal NSW |
| MoH | Ministry of Health |
| MOU | Memorandum of Understanding |
| NADA | Network of Alcohol and other Drugs Agency |
| NDAP | National Disability Advocacy Program |
| NDIS | National Disability Insurance Scheme |
| NDIA | National Disability Insurance Agency |
| NDS | National Disability Service |
| NGO | Non-Government Organisation |
| NMHS | National Mental Health Standards |
| NMHSPF | National Mental Health Service Planning Framework |
| NMHC | National Mental Health Commission |
| T&G | NSW Trustee and Guardian – Public Guardian |
| OV | Official Visitor |
| P4H | Partnerships for Health |
| PHaMS | Personal Helpers and Mentors |
| PHNs | Primary Health Networks |
| PIR | Partners in Recovery |
| PC | Productivity Commission |
| Q&SC | NDIS Quality & Safeguards Commission |
| OPMHS | Older Persons Mental Health Service |
| RANZCP | Royal Australian and New Zealand College of Psychology |
| SDM | Supported Decision Making |
| SIL | Supported Independent Living |
| TICP | Trauma-informed Care & Practice |
| TOR | Terms of Reference |
| UNCRPD | United Nations Conventions on the Rights of Persons with Disabilities |
| VET | Vocational Education Training |
| WDO | Work and Development Order |
| WHS | Work Health and Safety |