The United Nations (UN) is an international organization comprising 193 Member States, including the United States. As a global organization, the UN is the one place on Earth where the world's nations can gather to discuss common problems and find shared solutions that benefit all humanity. This handbook has been produced for UN staff of all backgrounds and levels and provides an overview of how to approach your participation in a mentorship program. This resource is quickly digestible and provides a basic structure that will be helpful to review before the first meeting with your mentee.