We have to take action together against global issues for the future of our planet. For this, multi-stakeholder communication environment must be provided. States, companies, governments, non-governmental organizations and the global community should actively take part in diplomacy as actors of this multi-stakeholder communication environment. Sustainable Future Diplomacy discusses the diplomatic efforts of these actors to solve the global issues of the 21st century and it emphasizes that the practice of multi-stakeholder diplomacy should be taken as a basis for various global and regional issues.