The aim of this paper is to explore the relationship between Islamic religiosity and satisfaction with a diverse range of life and health domains, in a sample of 2909 participants (1446 males, 1463 females) from Algeria. Factor analysis of the Islamic Religiosity Scale (IRS) indicates that it measures Religiosity as a multidimensional construct with two useful factors: Religious Practice and Religious Altruism. Religiosity at some level is ubiquitous through this sample, and it has a strong positive relationship with Subjective Well-Being (SWB). Moreover, this relationship is relatively unaffected by health deficiencies, even though such deficiencies generally have a negative influence on SWB scores. These findings are discussed in terms of the social context of Algeria.