Relationships between drinking, drinking norms, 3 measures of religiosity (frequency of church attendance, view of self as religious, satisfaction derived from church activities) and 2 of beliefs (orthodoxy of beliefs in general and the belief that drinking is a sin) were examined by questionnaire in 323 9th grade students (135 boys) in a medium-sized city in the Pacific Northwest. The measures of religiosity, each of which was related to orthodoxy of beliefs, were highly intercorrelated and moderately to strongly correlated with drinking and the belief that drinking is a sin. Of 4 groups (self-reported religious and nonreligious Protestants and Catholics), religious Protestants were most likely to believe that drinking is a sin and least likely to drink; 48% of religious vs. 22% of nonreligious Protestants believed that drinking is a sin and 18 vs. 53% used alcohol. Differences in the proportions of religious and nonreligious Catholics who drank (34 and 54%) and who believed that drinking is a sin (22 and 24%) were not significant. The relationship between church attendance and drinking was much stronger for Protestants than for Catholics. Students'' rating of a hypothetical male drinker showed that Protestants were more proscriptive than Catholics, religious students were more likely than the nonreligious to approve of abstinence, and those who believe that drinking is a sin were far more disapproving of drinking than were their counterparts.