This research aims to find out how UNICEF is trying to overcome child marriage in Nigeria, where Nigeria is the country with the highest percentage of early marriages in the world, with an achievement of 39%. UNICEF's involvement is an important aspect of the Nigerian government's efforts to address child marriage through collaboration with international organizations. This research uses international organization theory, where the international organization in this research is UNICEF as an actor collaborating with the Nigerian government in efforts to eliminate child marriage. This research uses a qualitative descriptive research method, where research obtained through data will be implemented through descriptive words. The tool in this research uses library research, where researchers will obtain data through books, journals, e-books, the internet, and news that is relevant to UNICEF's efforts to overcome child marriage. The results of this research found that UNICEF’s efforts to overcome child marriage in Nigeria were carried out through collaboration in the UNFPA-UNICEF program, as well as UNICEF’s intervention in providing campaigns on the importance of reproductive education and health and how UNICEF intervened in eliminating traditional norms that supported the occurrence of child marriage
