The C40 Large Cities Climate Leadership Group has invited 40 large cities to participate in its efforts:

Addis Ababa	Caracas	Jakarta	Melbourne	Rome
Athens	Chicago	Johannesburg	Mexico City	Sao Paulo
Bangkok	Delhi	Karachi	Moscow	Seoul
Beijing	Dhaka	Lagos	Mumbai	Shanghai
Berlin	Hanoi	Lima	New York	Sydney
Bogota	Hong Kong	London	Paris	Tokyo
Buenos Aires	Houston	Los Angeles	Philadelphia	Toronto
Cairo	Istanbul	Madrid	Rio de Janeiro	Warsaw

The C40 also has invited a number of additional cities that have been leaders in reducing greenhouse gas emissions to be associated with the group. Associate cities include Amsterdam, Austin, Barcelona, Copenhagen, Curitiba, Heidelberg, Portland, Rotterdam, Salt Lake City, San Francisco, Seattle, Singapore, and Stockholm. Where these cities are exemplary, CCI will facilitate the exchange of their expertise and best practices to other cities in the C40 that are interested in implementing similar emissions reduction measures. New Orleans has also been invited to join due to our desire to assist its rebuilding efforts.