| IJIndy Johar | Europe | London, United Kingdom | Leadership and governance, Economics and finance |
| LJDr. Lyla June Johnston | North America | Taos, United States | Indigenous knowledge, Leadership and governance |
| KJKosha Joubert | Europe | Berlin, Germany | Leadership and governance, Climate solutions, Economics and finance |
| TJTrudy Juriansz | Oceania | Eumundi, Australia | Leadership and governance, Climate solutions, Indigenous knowledge |
| OKOlivia Savile Katz | Europe | Lisbon, Portugal | Leadership and governance, Climate solutions, Economics and finance |
| CKColin Keogh | Europe | Dublin, Ireland | Leadership and governance, Climate solutions, Economics and finance |
| SKSam Knowlton | North America | United States | Agriculture and food, Leadership and governance, Climate solutions |
| JKJoshua Konkankoh | Africa | Yaoundé, Cameroon | Indigenous knowledge, Leadership and governance, Agriculture and food |
| AKAnna Kovasna | Europe | Sengouagnet, France | Leadership and governance, Climate solutions, Indigenous knowledge |
| AKAlda KP | Europe | Spain | Leadership and governance, Climate solutions |
| RLRob de Laet | Europe | Amsterdam, Netherlands | Climate solutions, Leadership and governance |
| MLMaría José Lecaros Lanas | North America | Miami, United States | Economics and finance, Leadership and governance |
| GLGregory Landua | North America | Vermont, United States | Economics and finance, Climate solutions, Indigenous knowledge |
| GLGeoff Lawton | Europe | New South Wales, Australia | Agriculture and food, Leadership and governance, Climate solutions |
| OLOlivia Lazard | Europe | Brussels, Belgium | Climate solutions, Leadership and governance, Economics and finance |
| MLMauricio Lecaro | North America | San José, Costa Rica | Leadership and governance, Climate solutions, Economics and finance |
| JLJeremy Leggett | Europe | London, United Kingdom | Climate solutions, Economics and finance |
| LLLucimara Letelier | South America | Brasília, Brazil | Leadership and governance, Climate solutions, Indigenous knowledge |
| JLJohn D. Liu | North America | Thousand Oaks, United States | Climate solutions |
| ALAlessandra Lomonaco | Europe | Milan, Italy | Leadership and governance, Climate solutions, Economics and finance |
| LLL. Hunter Lovins | North America | Longmont, United States | Climate solutions, Leadership and governance, Economics and finance |
| TLTica Lubin | North America | California, United States | Leadership and governance, Climate solutions, Economics and finance |
| KLKelly Luo | North America | Toronto, Canada | Leadership and governance, Climate solutions, Economics and finance |
| TLTobias Luthe | Europe | Switzerland | Leadership and governance, Climate solutions |
