It’s your world. Fix it.
December 3-7, 2026
It's your world.
Fix it.
Welcome to CIMUN 2026 - Chicago's premier Model UN experience where high school delegates tackle global challenges through innovative diplomacy, realistic portrayal of national interest, and strategic problem-solving.


The 23rd annual Chicago International Model UN (CIMUN) features our unique simulation style that mirrors real-world international relations, developed by the Institute for Diplomacy Education and Advocacy (IDEA).
December 3-6, 2026
Fairmont Chicago Millennium Park
200 N Columbus Dr, Chicago, Illinois
Experience diplomatic interconnection
Unlike traditional Model UN conferences, CIMUN features fully integrated committees where actions in one body directly impact others. Delegates must collaborate as country teams to advance their national interests across multiple fronts simultaneously.
Our unique awards system recognizes both diplomatic expertise and political innovation, rewarding delegates who master their country's position while demonstrating adaptability in complex scenarios.
Opening Ceremonies & Banquet
Begin your CIMUN experience with our elegant opening plated banquet featuring distinguished speakers from diplomatic and international affairs backgrounds. This formal plated dinner provides delegates the perfect opportunity to network with peers and faculty while setting the professional tone for the conference.
What Sets cimun apart
CIMUN delivers an unparalleled educational experience that transforms how students understand global politics and diplomacy.
Our conferences mirror actual international relations dynamics, preparing delegates for future leadership roles while building crucial skills in negotiation, public speaking, and strategic thinking.
Dynamic Crisis Simulations That Evolve in Real-Time
Our dedicated crisis staff creates breaking developments throughout the conference, challenging delegates to respond to unexpected events just as real diplomats must do.
This year features our most ambitious integrated simulation yet, focusing on our acclaimed Historical Simulation set in 1989. Delegates will navigate complex geopolitical challenges in a unique historical context.
