This study explored the role of church leaders in addressing climate change with a focus on Catholic, Anglican, and Pentecostal churches in Nigeria. The study adopted a semistructured face-to-face interview with 30 church leaders drawn from the selected denominations (i.e., 10 church leaders from each denomination). These participants were spread across five states in five geopolitical zones in Nigeria. A descriptive narrative approach was employed in the thematic organization and analysis of data. Findings showed that while all the participants across the three denominations—Catholic, Anglican, and Pentecostal churches—agreed to have heard of climate change, their perceptions of the causes of the phenomenon were narrow and varied along religious denominational lines. More Catholic participants expressed belief in anthropogenic climate change than did Anglicans and Pentecostals. Awareness creation, charity for disaster victims, and prayer were identified by the participants as the roles churches can play in addressing climate change. Although climate change action was generally poor among participants, Catholics engaged more in organizational action than did Anglicans and Pentecostals. In contrast, climate change actions were more on a personal level than on the organizational/church level within Pentecostal churches. The implications of the findings for the Church/church leaders, policy, and future research are discussed.