This article discusses Islamic eco-theology and the role of Indonesian Muslim organizations in dealing with environmental degradation through climate change mitigation and adaptation actions. The focus is on the pattern of involvement of Muslim organizations in integrating Islamic values with ecological challenges. This discussion is important, considering that Indonesia faces many problems of environmental degradation. Religion is seen as having a strategic role in overcoming this issue through Islamic ecotheological values. The research used qualitative methods with case studies of Muslim organizations in Central Java, East Kalimantan, and South Sulawesi. The results showed that Muslim organizations such as NU, Muhammadiyah, MUI, and Pesantren have played an active role in environmental conservation efforts. NU focuses on greening and waste management, Muhammadiyah prioritizes education and development of renewable energy, while Pesantren instills ecological awareness based on religious values. The integration of Islamic teachings in maintaining ecological balance can be seen from the Islamic concept that places humans as caliphs on earth with the task of protecting nature, avoiding waste, and upholding the mandate. Islam also reminds its people that damaging the environment will be rewarded in the hereafter. This study confirms that Islamic values are important in supporting environmental sustainability strategies.