Justin Pierre Albert Vaïsse is a French historian and intellectual. Since March 2019, he is the Director General of the Paris Peace Forum organization, an independent NGO he founded in 2018 under the impetus of French President Emmanuel Macron. The Paris Peace Forum is an annual event that aims at promoting new rules and solutions to address the global challenges of our time. Prior to this role, he was Director of Policy Planning at the French Ministry of Foreign Affairs from 2013 to 2019.

The Paris Peace Forum is a French non-profit organisation created in March 2018. The organisation hosts an annual gathering of world leaders and heads of international organisations, as well as leaders from civil society and private sectors and thousands of individuals from around the globe, on creating forms of collective action. The Paris Peace Forum completes the existing world agenda of multilateral gatherings by creating a specific event for global governance issues, as economic and financial issues are dealt at the World Economic Forum in Davos, and security issues at the Munich Security Conference.