Summary:  Numerous large-scale surveys in the United States and Europe suggest steady generational declines in religiosity and religious social participation, with visible shifts from one cohort to the next (Idler, 2022). And yet, research considering the secularization of society has largely ignored age and ageing as important points of inquiry (Idler, 2021). Similarly, beliefs in science and religion-science compatibility have rarely been investigated from a gerontological perspective, despite the long-standing concepts of gerotranscendence (Tornstam, 1997) and contemplative ageing (Sherman, 2010). Indeed, the increasing salience of one’s own mortality may enhance religious and/or spiritual concerns among older adults, alongside practical implications of mounting biomedical needs and care considerations. Given a rapidly growing ageing population (WHO, 2022), the need for inquiry into this topic has never been greater. Thus, our guiding research question is “How do older adults understand their own (non)religious and/or spiritual identities and beliefs in science within an increasingly