Altruistic suicides are marked by cultural approval and benefit the social order. They occur in social groups where there is a low value placed on the individual. The principle loci of altruistic suicide are primitive societies and the modern military. Subtypes of altruistic suicide (obligatory, optional, acute) are delineated and evaluated. Military suicide rates are seen as being inversely related to civilian suicide rates. Key limitations of Durkheim's model are discussed including his exaggerating the prevalence of obligatory suicide. Suggested points of departure for future research on altruistic suicide include comparative analyses of suicide in the modern military, and application of the concept of optional altruistic suicide to the impact of suicide acceptability on national suicide rates.