Publics in global politics are highly dynamic, considering the multitude of actors involved and the issues addressed. When examining Christian churches and the Ukraine War, it emerges that religions not only react to global politics but also contribute to identifying issues and measures of how to tackle them. The interplay of religious publics, therefore, appears particularly dynamic, warranting a distinct conceptualization. This article thus aims to introduce the concept of religious public(s) in global politics by building upon literature on how publics emerge and which manifestations they can assume. First, four manifestations of publics are examined by conducting a case study on Christianity and the Ukraine War. Employing the case study as a plausibility probe, the findings are re-examined in a second step to develop a typology of religious publics. The article concludes by identifying other areas in which studying religious publics and global politics would prove rewarding.