The Department of Sustainability and Environment (DSE) was a state government department that managed water resources, climate change, bushfires, public land, forests and eco systems in the state of Victoria, Australia.

[1] The department supported and advised two Victorian ministers, the Minister for Environment and Climate Change, Ryan Smith, and the Minister for Water, Peter Walsh, and helped with the management and administration of their portfolios.

The department secretary was Greg Wilson.

[2] It had 2700 staff working at 90 locations across the state.

[3] DSE was sometimes known colloquially as the "Department of Smoke and Embers" for its role in planned burns and bushfire management.