Climate Action 100+ is an investor initiative that seeks to spur the world's largest corporate greenhouse gas emitters to take action on climate change.

In December 2017, Climate Action 100+ identified a list of 100 focus companies that are systemically important greenhouse gas emitters globally. These emitters account for two-thirds of annual global industrial emissions. 

In July 2018, an additional 61 companies were added to the focus list. These companies, nominated by investor signatories, are material to to their investment portfolios, have significant opportunity to drive clean energy transition and/or may be exposed to climate-related financial risks.

In October 2020, the initiative has total engagement to across 167 firms.