The phenomenon of climate change and its impact on environmental systems is one of the major global problems that has drawn the attention of scientists for half a century or so. Studies indicate that human activities, including burning of fossil fuel and changes in the use of land, are responsible for rising levels of greenhouse gas emissions that cause global warming. Although the contribution of GCC states to global warming is quite small (not more than 1 percent), the fragile environmental systems of these states, the social services they provide, and their biodiversity will definitely be affected by this phenomenon. This is in addition to the possible impact of climatic changes both on public health and the economies of GCC states. This study presents the reasons for and impact of climate change. It provides an environment-based assessment of this phenomenon in GCC states, using the DPSIR framework. Based on an analysis of the major Gulf environmental systems that could be affected by climate change, the study proposes a structure for potential policies to ameliorate such effects and adapt to them, in addition to a strategy for advancing environmental awareness. The study recommends the formation of a joint GCC commission to monitor the impact of climate change on the Gulf States. The author calls for more in-depth studies to explore the environmental and socio-economic impact of climate change. Also, the study stresses the need for public awareness programs to promote the role of the community in understanding the various aspects of climate change and their potential impact on the Gulf region as a whole. It also calls for training of a professional cadre in the field of environmental sciences to deal with these issues.