Purpose: This study was conducted to investigate the related factors of insight, self-esteem, and coping skills and the relationships among them in patients with alcohol addiction. Methods: The participants enrolled in this study were 106 patients from two alcohol treatment hospitals in Gyeonggi Province. Data were collected from May, 12 to 20, 2010 using self-report questionnaires. The instruments were the Hanil Alcohol Insight Scale, Rosenberg Self-esteem Scale, and the Ways of Coping Checklist. Data were analyzed using the SPSS-Win 12.0 program. Results: Among the participants, 24.5% had poor insight, 45.3% fair insight, and 30.2% good insight. Insights of participants who had experienced withdrawal symptoms (t=-3.79, p<.001) and of those not living with family (t=-2.07, p=.041) were higher than those who had not experienced the symptoms and who were not living with family. Self-esteem of participants living with family (F=3.60, p<.001) and of those with better academic backgrounds (F=3.39, p=.021) were higher than those of the other groups. Also, self-esteem showed a positive relation with active coping (r=.34, p<.001). Conclusion: The results of the present study suggest that mental health practitioners need to focus on insight and self-esteem enhancement, coping skill development when treating patients with alcohol addiction.