Social support is being recognized as a positive influence on health. It may influence motivation, treatment compliance and outcome in drug dependent patients. On the basis of clinical impression, it was hypothesized that social support in heroin (illicit drug) dependent patients is poorer than in alcohol dependent patients. The current study was undertaken to assess and compare the social support amongst treatment seeking alcohol dependent patients and heroin dependent patients. Despite lesser proportion of patients with any legal source of income in the heroin dependent subject group, the mean social support score across the two study groups was comparable. Overall, the mean social support scores were low in both the groups. The study provides some undestanding about the perceived social support amongst treatment seeking drug dependent individuals from India and also indicates the need to address the issue of social support in substance users.