Model United Nations, also known as Model UN or MUN, is an educational simulation and/or academic activity in which students can learn about diplomacy, international relations, and the United Nations. MUN involves and teaches researching, public speaking, debating, and writing skills, in addition to critical thinking, teamwork, and leadership abilities. Usually an extracurricular activity, some schools also offer MUN as a class.

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                         Participants in Model United Nations conferences, known as delegates, are placed in committees and assigned countries, or occasionally other organizations or political figures, where they represent members of that body. They are presented with their assignments in advance, along with a topic or topics that their committee will discuss. Delegates conduct research before conferences and formulate positions that they will then debate with their fellow delegates in the committee, staying true to the actual position of the member they represent. At the end of a conference, the best-performing delegates in each committee, as well as delegations, are sometimes recognized with awards.

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                         Model UN participants include students at middle school, high school, and college/university levels, with most conferences catering to just one of these three levels (high school and college conferences being most common).Delegates usually attend conferences together as delegations sent by their respective schools' or universities' Model UN clubs, though some delegates attend conferences independently