| Salamon, Orna | Assistant Deputy Minister, Environmental Sciences and Standards | Executive and senior leadership | $396,874 | $280 | 2025 |
| Harrison, Sarah | Deputy Minister | Executive and senior leadership | $370,689 | $8,429 | 2025 |
| Chaput, Brandon | Assistant Deputy Minister, Environmental Policy Division | Executive and senior leadership | $312,482 | $289 | 2025 |
| Trevisan, Lisa | Assistant Deputy Minister, Environmental Assessment and Permissions Division | Executive and senior leadership | $307,782 | $267 | 2025 |
| Stuart, Chloe Tl | Assistant Deputy Minister, Land and Water Division | Executive and senior leadership | $304,875 | $289 | 2025 |
| Wood, Alexander | Assistant Deputy Minister, Climate Change and Resiliency Division | Executive and senior leadership | $287,343 | $315 | 2025 |
| Tao, Jing | Assistant Deputy Minister, Corporate Management | Executive and senior leadership | $278,606 | $261 | 2025 |
| Carrasco, Steven | Assistant Deputy Minister, Drinking Water and Environmental Compliance Division | Executive and senior leadership | $261,649 | $263 | 2025 |
| Coulter, Travis | Director, Species at Risk | Other disclosed roles | $257,670 | $233 | 2025 |
| O'Hara, Charles | Director, Resource Recovery Policy Branch | Other disclosed roles | $244,314 | $250 | 2025 |
| Malcolmson, Heather | Director, Client Service and Permissions Branch | Other disclosed roles | $239,264 | $243 | 2025 |
| Roberts, Andrea | Director | Other disclosed roles | $236,241 | $214 | 2025 |
| Kurtes, Robyn | Director, Environmental Policy Branch | Other disclosed roles | $235,442 | $242 | 2025 |
| Malczewski, Gregory | Director, Ontario Parks Growth and Partnerships | Other disclosed roles | $233,176 | $222 | 2025 |
| O'Neill Carter, Kathleen | Director, Environmental Assessment | Other disclosed roles | $231,608 | $250 | 2025 |
| Ecclestone, Susan | Director, Caribou Conservation | Other disclosed roles | $229,638 | $231 | 2025 |
| Hussain, Lubna | Director, West Central Region | Other disclosed roles | $227,080 | $230 | 2025 |
| Travers, Jason | Director, Ontario Parks | Other disclosed roles | $225,702 | $250 | 2025 |
| Legris, Jacques | Director, Strategic Human Resources | Human resources, labour relations and total rewards | $224,769 | $250 | 2025 |
| Cross, Annamaria | Director, Environmental Assessment Modernization Project | Other disclosed roles | $224,750 | $221 | 2025 |
| Evers, Melissa | Director, Divisional Compliance Branch | Other disclosed roles | $223,042 | $214 | 2025 |
| Beckett, Charlotte | Director, Ontario Parks Growth and Partnerships | Other disclosed roles | $222,139 | $237 | 2025 |
| Taylor, Peter | Director, Eastern Region | Other disclosed roles | $221,364 | $221 | 2025 |
| Parks, Andrea | Director, Laboratory Services | Other disclosed roles | $220,351 | $221 | 2025 |
| Luong, Leo | Director, Great Lakes and Inland Waters Branch | Other disclosed roles | $217,320 | $219 | 2025 |
| Stickings, Michael Jw | Director, Strategic Policy Partnerships Branch | Other disclosed roles | $216,719 | $232 | 2025 |
| Edwards, Maria | Director, Business and Fiscal Planning | Other disclosed roles | $216,558 | $215 | 2025 |
| North, Thomas Norman | Director, Environmental Investigations and Enforcement Branch | Other disclosed roles | $213,011 | $228 | 2025 |
| Silva, Osvalda | Director, Corporate Services Branch | Corporate administration and operations | $211,343 | $215 | 2025 |
| Schroeder, Julie | Director, Technical Assessment and Standards Development Branch | Other disclosed roles | $211,111 | $226 | 2025 |
| Ahmed, Aziz | Manager, Municipal Water and Wastewater Permissions | Engineering, planning and infrastructure | $210,982 | $206 | 2025 |
| Ritchie, John | Director, Operational Services | Other disclosed roles | $208,082 | $208 | 2025 |
| Keyvani, Mohsen | Manager, Waste Approvals | Corporate administration and operations | $207,993 | $206 | 2025 |
| Filipowitz, Steven | Supervisor, Environmental Design | Corporate administration and operations | $206,910 | $202 | 2025 |
| Fancott, Patrick | Director, Climate Change Policy Branch | Other disclosed roles | $206,566 | $217 | 2025 |
| Salb, Abbygail | Supervisor, Air Modelling and Emissions | Corporate administration and operations | $206,041 | $177 | 2025 |
| Service, Kirsten | Director, Conservation and Source Protection Branch | Other disclosed roles | $204,349 | $218 | 2025 |
| Aminvaziri, Bahar | Director, Environmental Permissions | Other disclosed roles | $203,242 | $208 | 2025 |
| Steinman, Carly | Director, Climate Change Programs and Partnerships | Other disclosed roles | $201,402 | $213 | 2025 |
| Burdon, Jeffrey | Manager, Local Air Quality Permits | Corporate administration and operations | $200,341 | $186 | 2025 |
| Ward, Jessica | Director, Environmental Monitoring and Reporting | Other disclosed roles | $199,716 | $203 | 2025 |
| Fletcher, Rachael | Director, Central Region | Other disclosed roles | $199,536 | $212 | 2025 |
| McDonald, Daniel Ryan | Director, Air Policy and Programs Branch | Other disclosed roles | $198,102 | $212 | 2025 |
| Brunetti, Andrea | Director, Communications | Communications, marketing and public affairs | $197,967 | $203 | 2025 |
| Harth, David | Executive Assistant, Deputy Minister's Office | Executive and senior leadership | $196,600 | $209 | 2025 |
| Beaton, Sheri | Director, Environmental Economics Branch | Other disclosed roles | $196,419 | $212 | 2025 |
| Kowalski, Lori | Manager, Facilities Management Unit | Engineering, planning and infrastructure | $196,279 | $193 | 2025 |
| Nademi Nassari, Kaikhosrov | Chief of Staff | Executive and senior leadership | $196,249 | $229 | 2025 |
| Avery, Sean | Engineer, Air Pollution Control | Engineering, planning and infrastructure | $196,038 | $181 | 2025 |
| Chabchoub, Ferid | Engineer, Air Pollution Control | Engineering, planning and infrastructure | $196,038 | $150 | 2025 |
| Crivat, Mona | Engineer, Air Pollution Control | Engineering, planning and infrastructure | $196,038 | $181 | 2025 |
| Fragiadakis, Nick | Engineer, Air Pollution Control | Engineering, planning and infrastructure | $196,038 | $177 | 2025 |
| Merza, Header | Senior Noise Review Engineer | Engineering, planning and infrastructure | $196,038 | $180 | 2025 |
| Luisser, Frank | Engineer, Air Pollution Control | Engineering, planning and infrastructure | $196,037 | $177 | 2025 |
| Prashad, Indra | Director, Indigenous Drinking Water Projects Office | Engineering, planning and infrastructure | $194,797 | $218 | 2025 |
| An, Tai | Director, Science Complex Capital Project | Engineering, planning and infrastructure | $194,042 | $202 | 2025 |
| Zhang, Yuefeng | Lead Engineer, Priority Project | Engineering, planning and infrastructure | $192,131 | $169 | 2025 |
| Sharifi, Hadi | Engineering Specialist | Other disclosed roles | $190,705 | $180 | 2025 |
| Basit, Hassaan | Chief Conservation Executive | Executive and senior leadership | $190,676 | $172 | 2025 |
| Hegazy, Sherif | Manager, Noise Approvals | Corporate administration and operations | $190,371 | $202 | 2025 |
| Shah, Bijal | Senior Air Review Engineering Coordinator | Corporate administration and operations | $188,708 | $177 | 2025 |
| Manol, David | Director, Northern Region | Other disclosed roles | $188,474 | $200 | 2025 |
| Ahmed, Rosalinda | Engineer, Air Pollution Control | Engineering, planning and infrastructure | $187,359 | $177 | 2025 |
| Pileggi, Vincent | Lead Engineer, Water Advisor | Engineering, planning and infrastructure | $181,623 | $172 | 2025 |
| Van Steenburgh, Ellen | Director, Adaptation and Resilience | Other disclosed roles | $180,529 | $190 | 2025 |
| Poplar, Panagiota Patricia | Manager, Fiscal and Budget Management | Finance, procurement and audit | $180,121 | $184 | 2025 |
| Hart, Tracy | District Manager, Ottawa | Corporate administration and operations | $179,891 | $190 | 2025 |
| Burt, Stephen | District Manager, Hamilton | Corporate administration and operations | $179,734 | $190 | 2025 |
| Welniak, Natalia | Divisional Business Manager | Corporate administration and operations | $179,508 | $191 | 2025 |
| Leith, Carroll | Manager, Technical Support | Corporate administration and operations | $179,389 | $193 | 2025 |
| Burnside, Kathleen | Senior Manager, Strategic Communications | Communications, marketing and public affairs | $179,079 | $190 | 2025 |
| Peverini, Marc | Manager, Waste Diversion Initiative | Corporate administration and operations | $178,408 | $190 | 2025 |
| Kovarik, Paul | Director, Strategic Delivery Branch | Other disclosed roles | $177,536 | $198 | 2025 |
| Bradley, David | Director, Eastern Region | Other disclosed roles | $176,110 | $193 | 2025 |
| Jamal, Al-Noor | Manager, Water Policy | Engineering, planning and infrastructure | $175,942 | $199 | 2025 |
| Dumancic, Robert | Senior Engineer, Drinking Water Treatment | Engineering, planning and infrastructure | $175,594 | $161 | 2025 |
| Scott, Jason | District Manager, Sudbury | Corporate administration and operations | $175,548 | $191 | 2025 |
| Labarge, Christina | Regional Project Lead | Other disclosed roles | $174,830 | $193 | 2025 |
| Duggan, Daniel | Zone Manager | Corporate administration and operations | $174,638 | $193 | 2025 |
| Magnus, Michael | Business Manager | Corporate administration and operations | $174,638 | $193 | 2025 |
| Winter, Jennifer | Manager, Water Monitoring | Engineering, planning and infrastructure | $174,638 | $193 | 2025 |
| Groombridge, Kimberley | District Manager | Corporate administration and operations | $174,624 | $193 | 2025 |
| Loi, Eric | Senior Engineer, Industrial Specialist | Engineering, planning and infrastructure | $174,332 | $169 | 2025 |
| Armstrong, Tracey | Senior Engineering Specialist | Other disclosed roles | $174,279 | $187 | 2025 |
| Rohaly, Blair | Manager, Special Projects | Corporate administration and operations | $174,153 | $192 | 2025 |
| Melzer, Rachel | Manager, Human Toxicology and Air Standards | Corporate administration and operations | $174,043 | $189 | 2025 |
| Morton, Jennifer | Manager, Species at Risk Protection Policy | Corporate administration and operations | $173,889 | $184 | 2025 |
| Ramlal, Nadia | Manager, Air Policy | Corporate administration and operations | $173,859 | $193 | 2025 |
| Thomas, Sandra | Issues Manager | Corporate administration and operations | $173,735 | $189 | 2025 |
| Jordan, Katharine | Communications Director, Chief Conservation Executive Office | Executive and senior leadership | $173,597 | $193 | 2025 |
| Adrien, Pierre | District Manager, London | Corporate administration and operations | $173,247 | $193 | 2025 |
| Orpana, Nancy | Manager, Air Approvals | Corporate administration and operations | $173,018 | $176 | 2025 |
| Lehouillier, Jason | Manager, Technical Support | Corporate administration and operations | $172,943 | $183 | 2025 |
| McKerrall, Jeffrey | Manager, Technology Standards | Digital, data and technology | $172,900 | $173 | 2025 |
| Macchione, Eugene | Manager, Priority Permissions Services | Corporate administration and operations | $172,662 | $193 | 2025 |
| Junta, Deborah | Senior Engineer | Engineering, planning and infrastructure | $172,351 | $178 | 2025 |
| Lavender, Wendy | Manager, Source Protection Approvals | Corporate administration and operations | $171,654 | $193 | 2025 |
| Rabbior, Mark | Senior Manager, Issues and Media Relations | Communications, marketing and public affairs | $171,438 | $193 | 2025 |
| Miki, Kelly | Engineering Specialist, Air Standards and Risk Management | Other disclosed roles | $171,421 | $185 | 2025 |
| Todd, Aaron | District Manager, Guelph | Corporate administration and operations | $171,317 | $183 | 2025 |