Abstract: Background: Delegation is among the oldest concepts associated to professional and clinical nursing. With the rapid changes in the profession, delegation is becoming more important for nurse leaders and managers. It is highly expected from the manager nurses to effectively organize tasks of other health care workers and supervise them successfully. The ability of a nurse manager is very Crucial to the success of delegation among nurses. Objective: The main purpose of this study was, to assess The Nurse Managers’ attitudes and Preparedness towards Effective Delegation in a Tertiary Care Public Hospital Lahore. Method: A cross sectional descriptive survey was performed to assess the knowledge of nurse managers, (nursing supervisors, head nurses,and charge nurses) working at Punjab Institute of Cardiology & Services Hospital Lahore. A convenient sample of n=150 was used to collect the data from both hospitals, (85) from PIC and (65) from SHL. A structured adopted questionnaire was used to collect data and study's questionnaire, Data used in this study consisted of two main scales as well as demographic data sheets were collected. The data was analyzed on SPSS version 21. Results: The results of this study reveals that majority of the participants, 88% were having positive attitude towards delegation who scored 35 or above on a scale of 55 total score, while 12% had negative attitude who scored below 35 on attitude scale of 55. The results of this study indicate that 82.67% participants had good preparedness, who scored 75 or above in a total of 100 score, while remaining 17.3% scored less than 75 and had poor preparedness.