The Town and Country Planning Association (TCPA) is an independent research and campaigning charity founded and based in the United Kingdom.

Through its research, training, events, publications, and campaigns, it works to challenge, inspire and support people to create healthy, sustainable and resilient places that are fair for everyone.

Founded by Sir Ebenezer Howard in 1899 to promote the idea of the Garden City, the TCPA is Britain's oldest charity concerned with planning, housing and the environment.

[9] The TCPA undertakes research, policy formulation and political influence on climate adaptation and mitigation in the context of spatial planning.

The Planning & Climate Change Coalition, which has been brought together by Friends of the Earth and the TCPA, includes over 60 cross-sector organisations and individuals.

[10] The TCPA works with government and the private sector to campaign for meaningful public participation in the planning and development process.

Today, the TCPA continues to promote the creation of healthy places through the publication of research, reports and guidance on issues such as 20-minute neighbourhoods (sometimes referred to as the 15-minute city) The TCPA has been promoting the inclusion of green spaces in urban areas for over 100 years, as a core principle of the original Garden City movement.