T7his research provides a comprehensive analysis of suicide differentials among immigrant groups in Canada for the years 1971 and 1981. The overall assessment of findings supports the Durkheimian proposition that the rate of suicide among immigrants in Canada varies inversely with a group's degree of social integration. Immigrant groups with Catholic religious background (Italians, Portuguese, and Irish) have greater levels of social integration, suffer fewer shocks associated with the migration experience, and have greater abilities to provide strong community ties for their members; consequently, their rates of suicide are relatively low in relation to immigrant groups such as English-Welsh, Scottish, German, and American, which are known to possess lower levels of community integration. Durkheim's early investigation of the relation between social integration and self-destruction successfully combined theory and empirical research in sociology and has stimulated numerous contemporary analyses of suicide. The central postulate in Durkheim's analysis is that the suicide rate varies inversely with the degree of social integration. Although there have been attempts to qualify this proposition (e.g., Bankston, Allen, and Cunningham 1983; Danigelis and Pope 1979; Gibbs 1982; Gibbs and Martin 1958; Johnson 1965; Pope 1976; Pope and Danigelis 1981; Schalkwyk, Lazer, and Cummings 1979), the generalization remains: regardless of the indicator applied, suicide varies inversely with measures of integration (Stack 1980a, 1980b, 1982). In fact, the stability of this relationship has led *This research was supported by Central Research Fund Grant #55-81111, from the University of Alberta. The authors share sole responsibility for the contents and interpretations in this study. We extend our gratitude to K. P. Krotki, Jr., and P. Lim of Statistics Canada for their assistance in the compilation and processing of the data. Also a special thanks is directed to Joan Lindsay and John Sillins of the Vital Statistics Section of Statistics Canada for their help in making the data available for use in this study; and a further thanks to the anonymous referees who made valuable comments on an earlier version of this paper. Address correspondence to Frank Trovato, Department of Sociology, University of Alberta, Edmonton, Alberta, Canada T6G 2H4. ? 1986 The Universitv of North Carolina Press