Objective: This study aims to examine the effectiveness of jurisprudence in resolving cases by judges to achieve legal certainty, justice, and utility in their decisions. Theoretical Framework: Drawing on legal principles and legislative frameworks such as Article 28 of Law No. 48/2009 on Judicial Power, Article 22 AB (Algemene Bepalingen Van Wetgeving), and Article 1917 of the Burgerlijk Wetboek (BW), this research explores the role of jurisprudence as a source of law and its significance in the judicial process. Methodology: This research employs a qualitative approach, utilizing legal analysis and case studies to investigate the application of jurisprudence by judges in resolving cases. Data collection involves examining legal documents, court decisions, and scholarly literature related to the topic. Results and Conlusion: The findings indicate that jurisprudence plays a crucial role in enhancing legal certainty, justice, and utility in judicial decisions. Judges utilize jurisprudential principles as guiding frameworks to ensure consistency and fairness in their rulings, thus contributing to the effectiveness of the legal system. this study highlights the importance of jurisprudence in achieving the objectives of the judicial system. By incorporating jurisprudential principles into their decision-making processes, judges can uphold legal certainty, promote justice, and maximize the utility of their rulings, ultimately strengthening the rule of law.