The purpose of this study was to describe and compare sleep quality and emotional behavioral functioning in children with and without Juvenile Idiopathic Arthritis (JIA). JIA is an inflammatory disease with unknown cause and one of the most common rheumatologic chronic conditions in children. Common disease symptoms include joint pain, inflammation, fatigue, and sleep disturbances. In a previous study, we found poor sleep quality (difficulty falling asleep, daytime sleepiness, sleep disordered breathing (SDB)) associated with JIA. Forty-six children (6-to-11 years) participated in the study, 23 were diagnosed with JIA and 23 were age-matched controls. Parents completed the Children’s Sleep Habits Questionnaire (CSHQ), a 45-item measure of their child’s sleep habits and quality over the previous week. The CSHQ yields a total sleep disturbance score (higher scores indicative of more disturbed sleep) and eight subscales: bedtime resistance, sleep-onset delay, sleep duration, sleep anxiety, night awakenings, parasomnias, SDB, and daytime sleepiness. Parents completed the Child Behavioral Checklist (CBCL), a 113-item retrospective report of their child’s behavior. CBCL yields scores for internalizing problem (i.e. somatic complaints) and externalizing problem (i.e. hyperactivity). Scores were summed and converted to age and gender adjusted T-scores (M = 50, SD = 10), higher scores suggesting greater behavior problems. Descriptive analyses were calculated on demographics, clinical characteristics, sleep disturbances, and behavior. T-test and X2 procedures were used to examine study group differences (JIA and controls). We compared the proportion of children above the CSHQ clinical cutoff score (>41) to those below (<41) for overall sleep disturbance. Bivariate correlations and linear regressions were used to examine relations among age, medication, sleep variables, and CBCL behavior problems. Behavioral problems may stem from poor sleep quality in children with JIA. Findings from this study may heighten clinician awareness to assess sleep in children with JIA.