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Objective: Alcoholics Anonymous (AA) is a civil organization that play a role in the treatment of alcohol miusers worldwide for nearly 100 years. Many studies in the literature regarding AA have shown its significant positive contri-bution to abstinence. There is no study in Turkey about the effectiveness of AA. The aim of this study was to inves-tigate the effect of anonymous alcoholics on the abstinence duration of alcohol addicts. Methods: The study included 47 patients who attended AA and 43 patients who did not. The alcohol addicts attending AA consisted of volunteers in open meeting of AA. Whereas the patients who did not attended AA consisted of those with the diagnosis of alcohol addiction who presented to Bursa Public Hospital Alcohol and Drug Addiction Treatment Center (ADATC). Results: No statistically significant difference was found between the groups in terms of total duration of alcohol misuse (p>0.05). The yearly number of presentations was significantly higher among the patients who attended AA and there was a statistically significant positive correlation between duration of healing and duration of attendance to AA (p [Anadolu Psikiyatri Derg 2020; 21(4.000): 359-368]