Background: Providing high-quality nursing care is crucial for the well-being and recovery of patients. Nurses play a important role in recovery of patient by various elements of nursing care. Effective delivery of routine nursing care is influenced by various factors, including the collaborative dynamics among nurses. Collaboration among nurses have garnered increasing attention in recent years due to its potential impact on patient outcomes and safety. Objectives: To assess nurses’ inter-professional collaboration level and to determine collaboration among nurses and its association with the provision of routine nursing care in the ICUs. Study design: cross-sectional correlational design Setting: The study was conducted in the intensive care units of Bahria International Hospital, a private hospital in Lahore Duration: The duration of data collection was 09 months after the approval of synopsis from Research Ethical Committee (REC), The University of Lahore. Methodology: This research was done with a cross-sectional correlational design to examine the association between collaboration among nurses and the provision of routine nursing care in intensive care units (ICUs). The sample of 172 registered nurses conveniently selected from public hospitals. Two modified questionnaires were utilized to collect relevant data: one to assess collaboration between nurses and the second questionnaire to check the provision of nursing care. Results: Knowledge checked by NNC scale which showed that 64% of participants have good collaboration, and 36% of participants have poor collaboration. Routine nursing care checked by RNC Questioner which showed that level of routine nursing was good in 65.7%, while found poor nursing care in 34.3% of selected papulation. A Chi-square test was performed to see the association, which showed a significant association between collaboration among nurses and routine nursing because calculated P value is <0.001, (P value is <0.05 taken as significant). Conclusion: Based on the results, the findings of this study highlight the positive association between collaboration among nurses and the provision of routine nursing care in the intensive care unit. By promoting a culture of collaboration, healthcare facilities can optimize the delivery of high-quality nursing care in the intensive care unit.