Introduction: Intensive care unit (ICU) nurses play a central role in palliative care. However, there is a lack of qualitative evidence about the experiences of nurses providing palliative care in the ICU, especially in developing healthcare systems such as Indonesia. This study aimed to qualitatively explore the experiences of nurses providing palliative care in the ICU. Methods: This study used a qualitative research design. Nurses who worked in the ICU were selected using a purposive sampling method, and the inclusion criterion was that they had worked for more than one year in the ICU. In-depth semi-structured interviews were conducted with 15 ICU nurses about their experiences, and the data were analyzed using thematic analysis. Results: The data were analyzed using thematic analysis, which generated six main themes that reflected the experiences of palliative care by ICU nurses. The themes were further categorized into operational categories such as hospital support for palliative care practice, expectation for future palliative care practices, work satisfaction, family involvement in palliative care, palliative care practice in the ICU, and challenges in palliative care practice. This study also presents a conceptual tree model that summarizes the findings. Conclusions: This study highlights the need for more institutional support, better training, and structured protocols for the better implementation of palliative care in the ICU. Addressing these factors may facilitate improved patient-centered care and assist nurses and families involved in the palliative care process.