Indonesia officially serves as a non-permanent member of the United Nations Security Council on January 1, 2019. Indonesia's victory for the position obtained after winning over the Maldives in the voting process during the General Assembly in June 8, 2018. Indonesia received a total of 144 votes from 190 member countries. This victory led Indonesia to sit as a non-permanent member for the fourth time, after previously served in three different periods: 1973-1974, 19951996, and 2007-2008. This study examines the reasons behind Indonesia membership as a permanent member of the UN Security Council for the period 2019-2020. The reasons Indonesia wants to achieve in membership at the UN are analyzed using a constructivist approach. Where, according to Alexander Wendt, identities are the basis of interest. This idea underlies the interests which are then manifested in the action or policy of a country. The data comes from secondary data using the library research method. This research found out that the reason why Indonesia want to become a non-permanent member of United Nations Security Council are: through its identity as a sovereign maritime country, Indonesia is willing to achieve its national interest in maintaining territorial integrity from any threat, and through its identity as a democratic country, Indonesia is committed to fulfilling its interest in preserving world peace order following the mandate of UUD 1945 Constitution.