Gatward Development has worked with, and developed solutions for many Australian and international clients including:
| Client | Location | Private/Public | Industry |
| Centennial Coal | Australia-NSW | Private | Mining |
| Centerra Gold | Mongolia | Private | Mining |
| Collie Power | Australia-WA | Private | Utilities |
| Corrective Services | Australia-NSW | Public | Government |
| Country Fire Authority | Australia-VIC | Public | Government |
| Design And Report Teams UK Limited (DART) | United Kingdom | Private | Utilities |
| Delta Electricity | Australia-NSW | Public | Utilities |
| Department of Defence | Australia-ACT | Public | Defence |
| DMR Consulting | Australia-NSW | Private | Utilities |
| Dpt Sustainability & Environment | Australia-VIC | Public | Government |
| DPWS | Australia-NSW | Private | Utilities |
| Eden Hartley Consulting | Australia-NSW | Private | Utilities |
| Energy Australia | Australia-NSW | Private | Utilities |
| Eraring Energy | Australia-NSW | Public | Utilities |
| Ergon/Energex | Australia-QLD | Private | Utilities |
| FreightCorp | Australia-NSW | Private | Transport |
| Inco Goro Nickel | New Caledonia | Private | Mining |
| Independent Mgt Consulting Group | Australia-ACT | Private | Transport |
| Juvenile Justice | Australia-VIC | Public | Government |
| Mincom | Australia-NSW | Private | Software |
| National Grid Transco | United Kingdom | Private | Utilities |
| National Iranian Industries Company | Iran | Private | Mining |
| Newmont Australia | Australia-SA | Private | Mining |
| Norilsk Mining Company | Russia | Private | Mining |
| Ok Tedi | Papua New Guinea | Private | Mining |
| Oz Minerals | Australia-VIC | Private | Mining |
| Pacific National | Australia-NSW | Private | Transport |
| Protecht Group | Australia-NSW | Private | Software |
| QBuild | Australia-QLD | Public | Government |
| Rail Infrastructure Corporation | Australia-NSW | Public | Transport |
| RailCorp | Australia-NSW | Public | Transport |
| Salvation Army | Australia-NSW | Private | Utilities |
| Snowy Hydro | Australia-NSW | Public | Utilities |
| State Rail Authority | Australia-NSW | Public | Transport |
| State Transit Authority | Australia-NSW | Public | Transport |
| Transfield | Australia-WA | Private | Utilities |
| Transgrid Electricity | Australia-NSW | Public | Utilities |
| TRUenergy | Australia-VIC | Private | Utilities |
| Ventyx | Australia-QLD | Private | Software |
