This study examined the role of religiosity among adolescents' and adults' alcohol use in Trinidad. A stratified random sample design of 369 adolescents and 210 adult parents belonging to the various religious groups in Trinidad was employed. Participants were randomly selected from various educational districts across Trinidad. Adolescent respondents completed a demographic questionnaire and the Substance Abuse Subtle Screening Inventory-A2 (SASSI-A2). Adult participants completed a similar demographic questionnaire and questions taken from the SASSI-A2 that related to alcohol use. MANOVA analyses revealed significant main effects for adolescents' and adults' alcohol use as it relates to religious affiliation and frequency of religious service attendance. It is hoped that these findings will assist health educators in the formulation of intervention programs in Trinidad. (Contains 2 tables.)