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The purpose of this study were to measure the prevalence of sleep disturbance in a prevalent population of chronic kidney disease (CKD) patients and to examine the association between quality of sleep and the other variables in this population. The subjects of the study were 126 patients who visited the nephrology outpatient department of a tertiary hospital in Seoul between December 12th and December 23th, 2012 and consented to participate in the study. Descriptive were used to analyze the data with the SPSS Win 12.0 program. Sleep disorder was identified in 42.9% of the participants. Quality of sleep level showed a maximum score of 80 with a mean score of 48.6. There was a significant difference in the quality of sleep of the subjects at each stage(F=10.94, p=<.001). The Scheffe post hoc test confirmed that patients at higher stages had lower levels of quality of sleep. There were significantly positive correlations between quality of sleep and residual renal function(r=.368, p<.001), age(r=.184, p=.039), level of education(r=.188, p=.036) and hemoglobin(r=.396, p<.001). There were significantly negative correlations between quality of sleep and CRP(r=-.331, p<.001) and uremic symptoms(r=-.427, p<.001). Age(p=.001), level of education(p=.047), GFRs(p=.016), hemoglobin(p=.012), CRP(p=.006) and uremic symptoms(p=.014) predicted value accounted for 59.4% of the variance on quality of sleep(F=10.84, p<.001). Hence, health care providers should be concerned about helping to slow the progression of renal failure and considered related variables when planning an approach towards managing the sleep disorder in predialysis patients with CKD.