Haarlem Model United Nations (HMUN) is an annual Model United Nations (MUN) conference organised by the Haarlem Model United Nations Organisation and hosted by the Stedelijk Gymnasium Haarlem, the Latin school of Haarlem, in the Netherlands. HMUN was founded in 1998 and was an initiative of the students of the Latin School. The MUN is held in the monumental building of the Latin School in the old city center of Haarlem.