["Analyses of Social Issues and Public Policy, Volume 26, Issue 1, April 2026. ", "\nAbstract\nClimate‐protective behaviors (CPBs) aim to reduce one's carbon footprint and to engage others in climate saving. Under the late Pope Francis's leadership (2013–2025), the Catholic Church, to which most Italians belong, paid increasing attention to the planetary crisis and advocated for lifestyle changes to protect the climate. Drawing from a survey of a representative sample of Italian citizens, we checked if religiosity, which research connects to altruistic predispositions predicting prosocial behavior, impacts the intention to adopt CPB. We find modest variance, indicating that older respondents, women, working people, the highly educated, non‐believers, and politically interested individuals are more willing to adopt behavioral changes. Religiosity is significantly and positively associated only with some climate‐friendly behaviors: the willingness to buy sustainable clothing, to mobilize others, to invest in sustainable funds, and to avoid air travel. Political determinants are stronger predictors of intended climate activism and reduced red meat consumption.\n\nPublic significance statement\nAmidst growing calls for climate justice and action by religious leaders, this research found that religiosity moderately influences the willingness to adopt some climate‐friendly behaviors, whereas religion itself has no significant impact. To boost climate‐protecting action, appealing to altruistic inclinations and targeting messages to the various audiences to that effect could enhance the meaningfulness of religious elites’ climate communication.\n"]