The Canadian Network on Environment, Health, and Social Equity (CNEHSE), is a grassroots initiative of over 70 (and growing) representatives from community, government, and academic sectors. Our purpose is simple, but ambitious: we are committed to work together to place environmental inequity front and centre on Canadian environment and health research and policy agendas. Despite increasing national attention to the threat of environmental risks and hazards on human health, there remains little public knowledge of or policy focus on their disproportionate impacts on socially disadvantaged groups. As a consequence of discrimination based on aboriginal status, poverty, gender, and age, vulnerable Canadians bear the greatest burden of environmental harm and yet are often left at the margins of health, social, and economic policies toward the environment. This imbalance points to the notion of injustice and undermines Canadian values of human dignity and social equity. Strategies to address environmental inequities are just now coming to the forefront of research, policy development, web design and community and global action agendas. It is time for Canada to take lead role. The Canadian Network on Environment, Health and Social Equity aims to take this lead role in promoting healthy environments for all through collaborative research, policy and action.