Dan Diker, often known as Daniel Diker, is an American-Israeli journalist, media executive, policy analyst, and prominent figure in Jewish and Israeli public diplomacy. Born in New York, he has built a career focused on international relations, counter-terrorism, advocacy for Jewish communities worldwide, and Middle East security. Diker serves as the president and director of the Jerusalem Center for Public Affairs (JCPA), a leading think tank in Jerusalem dedicated to research and public diplomacy on Middle East security issues, where he began as a Senior Foreign Policy Fellow and Analyst before rising to lead the organization. He also directs the World Jewish Congress Institute for Policy Analysis in Jerusalem. His work emphasizes Israel's strategic interests and global Jewish advocacy.

Prior to his leadership roles, Diker held significant positions in international Jewish organizations. He was elected as the Secretary General of the World Jewish Congress (WJC) in June 2011, serving as the designate from December 2010, representing Jewish communities across nearly 100 countries. This role underscored his expertise in diplomacy and organizational leadership. Diker's academic background includes a BA cum laude from Harvard University, pursuit of an MBA at the Harvard Graduate School of Business (though he pivoted from business), and an MA summa cum laude in Government and Counter-Terrorism Policy from the Interdisciplinary Center in Herzliya, Israel. His career trajectory reflects a blend of American education and Israeli-focused policy work, positioning him as a key influencer in networks of Jewish and pro-Israel advocacy. He has professional ties to figures like Efraim Inbar, collaborating on projects related to security and policy analysis.