In general, the curator's task is to manage and settle bankruptcy assets. Among all the Curator's duties, the most important thing to do is record bankrupt assets as intended in Article 100 of Law Number 37 of 2004 concerning Bankruptcy and Postponement of Debt Payment Obligations (UUKPKPU). In practice, this task is quite difficult to carry out if the bankrupt debtor is not cooperative in providing data, the situation is also different regarding bankruptcy assets as third party collateral if they are not given to the curator when the deadline period given for execution has passed according to the Bankruptcy Law and PKPU. This article discusses the existence of third party collateral in the process of management and settlement by the curator as bankruptcy assets. To analyze the existence of third party collateral in the process of management and settlement by the curator of bankruptcy assets and to analyze the curator's authority in settling collateral belonging to third parties. This article was written using doctrinal research methods to produce results using an explanatory research typology. Furthermore, the findings of this research conclude that the unclear formulation of bankruptcy assets in the Bankruptcy Law underlies the curator who is required to maximize bankruptcy assets, to include collateral belonging to third parties in the list of bankruptcy assets, which therefore requires a legal discovery by the judge from the uncertainty regarding the limits of bankruptcy assets specified in the Bankruptcy Law. It is hoped that this research will be able to explain further regarding the existence of third party collateral in the process of being managed and settled by the curator as bankruptcy assets. "