To what extent does religiosity relate to subjective well-being (SWB) across the world? We review empirical evidence from both Western and non-Western nations and it points to a pan-cultural positive relation between religiosity and SWB. Using a multilevel perspective, we propose psychological and social mechanisms for this process: at the individual level, religiosity fulfills needs; at the national level, collective religiosity can enhance pro-social behaviors. Recent research also points to contextual effects of religiosity. National religiosity can serve as a buffer to SWB against difficult life circumstances; it can also augment personal religiosity effects on SWB. Future research directions on religiosity and SWB are discussed.