Objective: The aim of this study was to examine the addiction severity in drug users who were imposed judgment of probation according to depressive symptom level. Method: The descriptive and cross-sectional research was conducted in the sample of drug users (N=330), whose follow-up is continuing by the probation office. The data were collected using the Personal Information Form, Beck Depression Inventory (BDI), and the Addiction Profile Index Clinical Form (API-C). Results: The average age of substance users participating in the study was 28.93 ± 6.96, 97% were male, 40% were secondary school graduates, and 59.1% were single. API-C total/severity score of the participants was 12.32 ± 4.02, 16.7% of them had moderate and 31.8% of them had a high level of addiction severity. According to the BDI cut-off point; API-C total and sub-dimensions scores was statistically significantly higher in substance users who high depressive symptom level. Conclusion: Half of the substance users who are put on probation have low addiction levels. Addiction severity is also high in substance users with high levels of depressive symptoms. In this context, it may be suggested to focus on preventing addiction and early diagnosis and treatment of depressive problems in individuals with substance abuse.