This study aims to pinpoint the main rudiments of Islamic-normative environmental ethics, and also to give an overview of its similarities and/or differences from secular-normative environmental ethics, as they can be interpreted in Islamic Declaration on Global Climate Change, and in Declaration on Ethical Principles in Relation to Climate Change. As a theoretical framework, the study uses specifically selected features of Mikael Stenmark’s Miljöetik och miljövård, and of Ibrahim Özdemir’s The Ethical Dimension of Human Attitude Towards Nature: a Muslim Perspective. The material has been divided into the following four categories: Values, Humanity, Lifestyle, and Relations. The material has then been analyzed by using a qualitative content analysis. The results of the study show that the Islamic- and the secular-normative environmental ethics share many valuational standpoints, but their differences stem from what they use as the source to legitimize their ethics. The secular environmental ethics puts humanity in the center, whereas the Islamic environmental ethics places God in the center.