Clean Air Fund is a global philanthropic organisation working with governments, funders, businesses and campaigners to create a future where everyone breathes clean air. Established in 2019, the organisation funds and partners with organisations across the globe that promote data, build public demand for clean air and drive action. 

The organisation engages and supports decision makers to act on clean air, and brings together funders, researchers, policy makers, businesses and campaigners to strengthen the air quality cause. Since its inception, the Clean Air Fund has supported over 300 projects and granted more than $64 million. Clean Air Fund's geographic focuses include the EU, Ghana, India, South Africa and the UK. The organisation also runs global programmes to raise air pollution up the international climate and health agendas, advance air quality data and drive private sector action.

One of its notable initiatives is Breathe Cities, a partnership with C40 Cities and Bloomberg Philanthropies, that supports cities to reduce their air pollution and climate emissions (https://www.cleanairfund.org/news-item/breathe-cities-join-global-initiative/).