Background Intrahepatic cholangiocarcinoma (ICC) presents a significant clinical challenge due to its high fatality rate and limited surgical candidacy. With only 30-40% of patients eligible for surgery upon diagnosis, alternative therapies are imperative. This study assesses the efficacy of Yttrium-90 (Y-90) radioembolization for unresectable ICC patients in a non-university tertiary care center (NUTCC). Methods A retrospective analysis of 15 unresectable ICC patients treated with Y-90 radioembolization was conducted. Tumor response, survival, and adverse events were evaluated using RECIST criteria. Results 60% of patients exhibited partial response, and 20% showed stable disease, with notable tumor size reduction and a median survival of 14 months. Minimal adverse effects were observed, indicating Y-90’s favorable safety profile. Conclusion Y-90 radioembolization shows potential in reducing tumor burden and enhancing survival rates with minimal adverse effects for unresectable ICC. Larger prospective studies are needed to confirm its efficacy and define its role in ICC treatment protocols.