The study was conducted to assess the level of quality of sleep among postoperative patients admitted in JMMC and RI, Thrissur. Objectives: Objectives were to assess the level of quality of sleep among post-operative patients admitted in JMMC and RI, Thrissur and to associate socio-demographic and clinical data variables with level of quality of sleep among post-operative patients admitted in JMMC and RI, Thrissur. Methodology: A non experimental approach with descriptive design was used. The study was conducted by purposive sampling technique with 91 samples having age above 18 years from the general surgery ward of JMMC and RI. The data collection tool used in the study are demographic and clinical data variables and self developed questionnaire. Questionnaire score <45 is considered as adequate sleep and >45 is considered as inadequate sleep. Both descriptive (frequency, percentage) and inferential statistics were used to analyze the data. Results: Socio-demographic data shows that majority of people 22 (24.2%) belong to the age group greater than 58 years and 39-48 years and 47 (51.6%) are males, 51 (56%) are Hindus. Clinical data variables shows that majority of people 74 (81.3%) were given general anesthesia, 38 (41.8%) of people is on 2 nd post operative day, 39 (42.8%) slept for 2-4 hours, 79 (86.8%) use general ward, 57 (62.6%) does not have any comorbid conditions, 75 (82.4%) have sleep disturbances, 39 (42.8%) have moderate pain and 83 (91.2%) have no history of past use of sleep medications. Inference from the Self developed Questionnaire shows that majority scored >45, 63 (69.23%) post-operative patients had inadequate sleep and only 28 (30.6%) patients scored <45 and had adequate sleep.1 There is significant association (p=0.001) between quality of sleep and sleeping hours. There is significant association (p=0.001) between quality of sleep and post-operative pain. Also there is significant association (p=0.001) between sleep quality and sleep. It is also evident that there is no association between quality of sleep and other socio-demographic and clinical data variables among post-operative patients thus adequacy of sleep identified here.2 Conclusion: The present study was to assess the level of quality of sleep among postoperative patients admitted in JMMC and RI,Thrissur. At the end of the study the investigators team found that majority 63 (69.23%) of post-operative patients have sleep disturbances only 28 (30.6%) had adequate sleep. This reflects that specific nursing care protocols for quality sleep in post-operative patients need to be developed and implemented.3