Tom Gregg

I’m a strategist, mediator, and senior advisor with over two decades of experience navigating conflict, humanitarian diplomacy, and sensitive negotiations in some of the world’s most challenging conflict environments.

I’ve served as a mediator, access negotiator, and policy advisor to governments, the United Nations, the private sector and global NGOs—often working behind the scenes with sanctioned actors, armed groups, and political leaders during moments of tension, transition, or breakdown. My work has included hostage recovery, classified negotiations, and strategic facilitation on behalf of partners such as the U.S. government, the Gates Foundation, the WHO, and the government of Norway.

I’ve led field operations in high-risk settings including Afghanistan, Somalia, and Nigeria, and held senior roles within the UN system, global NGOs, and international policy institutions.

Today, I run The Consilient—a discreet advisory practice supporting founders, executive teams and families, where internal conflict, succession strain, or leadership misalignment threatens trust and momentum. I bring operational clarity and principled calm to situations where reputational risk is high and traditional mediation falls short.

I also currently serve as Senior Advisor to the United Nations Humanitarian Negotiations Unit, advising on access strategy in politically sensitive and security-compromised settings. I also serve on the panel at PADRE, the leading mediation and arbitration group in the U.S.; as a Counsellor to Dragoman Global, a political risk firm; and as a member of the President’s Leadership Council at Search for Common Ground, the world’s largest peacebuilding NGO.