UN Mappers is a community of mapping enthusiasts collaborating to collect, validate and disseminate geospatial open data in areas where the United Nations carry field operations with the goal of supporting the decision-making process with more accurate location-based data. UN Mappers is part of the United Maps Initiative operated by the Department of Operational Support of the United Nations (UN DOS). 

How to join UN Mappers? 

The quick reference attached will guide you how to join.