This article provides an empirical assessment of the potential effects of faith affiliation and religiosity on altruistic behaviors across the world. We use data on more than 100 countries and 200,000 individuals from the Gallup World Poll between 2012 and 2016. To test for relationship of faith affiliation and reigiosity with altruistic behaviors (charitable donations, volunteering, and help provided to strangers), we control for many other variables. We find that, controlling for other factors, individuals who declare that religion is important in their life tend to have a higher likelihood of demonstrating altruistic behaviors.