This chapter examines issues related to working with diverse populations with addictions. A brief history of multiculturalism and multicultural counseling is presented. Issues particular to the treatment of people with addictions are examined, as well as prevention and assessment issues. Substance abuse issues among people in the gay male and lesbian culture and the older population are examined. Suggestions for counselors working with these populations are provided. Multicultural models and concepts that could be applied to addiction populations are presented. Society has a role in addressing the issues of people with addictions because this population can have negative effects on society in general. With appropriate interventions, the negative effects of addiction can be mitigated and perhaps alleviated entirely. It is hoped that society will continue to explore alternative ways of addressing the issues that this population presents. Also included is a facilitator's manual which is a practical guide for teaching content through guided experiential projects. Eight objectives are listed, and seven student exercises are provided. (Contains 76 references.) (MKA)