Climate change is local; climate action is local, too.
Margaret Prophet, Executive Director, Simcoe County Greenbelt Coalition, in Simcoe.com, Jan 23, 2020
See Ontario & global climate action listings:
Places
Barrie
Guelph
Toronto
Directories
Global Organizations: Local Branches
Youth-Led Groups
Places
Barrie

The Simcoe County Greenbelt Coalition is a not-for-profit group, living wage employer, that was established in 2015 as collaboration between various Simcoe County and provincial organizations aimed at growing the Greenbelt to better protect our water, natural heritage and farmland.
Guelph
Visit the GreenPique Guelph page for a full list of active community change makers and solutions providers, and more.
Toronto

Clean Prosperity is a Canadian climate policy organization that works toward market-based solutions to the climate crisis. We envision a world where a strong economy co-exists with a sustainable environment.

ClimateFast is a dedicated volunteer group that strives to build political will and to persuade politicians to work toward urgent and substantial action on climate change.

Green 13 is a group of Ward 13 residents concerned about the impact humans are having on our climate and environment.

Green Infrastructure Ontario (GIO) provides a united voice for the green infrastructure sector in Ontario.

Green Neighbours Network is a grassroots community network of people and groups working to make Toronto greener, healthier, and more sustainable.

At Green Parkdale, we make connections. We connect climate action and green living with community needs and goals.

Repair Café Toronto is a grassroots, volunteer group that organizes events where neighbours help neighbours learn how to repair. Our events are hosted by local community centres, branches of the Toronto Public Library and other community-based organizations.

For over 30 years, the Toronto Environmental Alliance (TEA) has campaigned locally to find solutions to Toronto’s urban environmental problems. As a not-for-profit organization, we advocate on behalf of all Torontonians for a green, healthy and equitable city.

The Toronto Climate Action Network (TCAN) is a network of over 30 climate action organizations building a movement together in & around Toronto.
Directories

The Ontario Environment Network (OEN) is a non-profit, non-governmental network serving Ontario’s environmental non-profit, non-governmental community. Ontario has over 700 environmental groups that range from national to neighbourhood-based and focus on a wide range of issues. Toronto

Ontario: Yours to Protect is an initiative of organizations supporting clean water, farmland, biodiversity, and healthy communities.
Youth-Led Groups
What I see as the biggest threat to climate change is human beings and what my auntie called human negligence. It’s all about making the choice to change and to be part of change and caring for the planet.
Autumn Peltier, Water Protector (teenvogue.com, January 3, 2020)

Extinction Rebellion is a leaderless, decentralised, international and apolitical network using non-violent direct action and civil disobedience to persuade governments to act justly on the Climate and Ecological Emergency. Global, with local hubs.

Fridays for Future Toronto is the local chapter of the Fridays for Future global climate strike movement. We are a youth-led, grassroots organization with the primary mission of mobilizing to demand climate justice through the organization of school strikes, rallies, and marches. Fridays for Future Toronto recognizes that the climate crisis is not only an environmental crisis but a social justice crisis too. We have adopted a number of intersectional demands that aim to create a space for youth to advocate for a better world that uplifts marginalized voices, follows the principles of climate justice and empowers youth to demand a future that is sustainable and just for all!

Sunrise is a movement to stop climate change and create millions of good jobs in the process. We’re building an army of young people to make climate change an urgent priority across America, end the corrupting influence of fossil fuel executives on our politics, and elect leaders who stand up for the health and wellbeing of all people. We are ordinary young people who are scared about what the climate crisis means for the people and places we love. We are gathering in classrooms, living rooms, and worship halls across the country. Everyone has a role to play. Public opinion is already with us – if we unite by the millions we can turn this into political power and reclaim our democracy. Global, with local hubs.
Global Organizations: Local Branches

Our world is in crisis. Climate chaos, biodiversity loss and social injustice pose critical, interrelated threats. Yet, instead of leading the movement toward a just and habitable future, Canadian government, banks and industry continue to focus on fossil fuel development and resource extraction. TO350 is a diverse group united by a common belief: enough is enough. Together we bring an inspiring blend of skill, drive and heart to the cause. Collective support and grassroots power allow us to not only confront the crisis with urgency and courage, but to envision a better world. Toronto branch of 350.org global.

Sustainable Waterloo Region (SWR) is a social enterprise nonprofit that’s committed to helping the local business community, and Waterloo Region as a whole, become environmentally and economically sustainable and strong. Our mission is to lead the transformation to sustainable systems of energy, mobility and construction to help build a cleaner, more diverse economy, and a more just and equitable community.