Brunei Darussalam is rich in natural resources, including fossil fuels and biodiversity, which it uses to develop its economy, while at the same time, conserve them in order to ensure that it maintains a clean and green environment. However, as a developing Islamic nation, Brunei Darussalam cannot escape from creating an undesirable change to its environment. Pollution is considered to be one of the most critical problems facing the environment today. Haze and solid waste are among the most prominent kinds of pollution in the country. The paper will look into the attitudes of the largely-Muslim society in Brunei Darussalam on environmental pollution, and their knowledge and behaviour regarding this issue. Finally, the paper attempts to explain what seems to be uncaring attitude and behaviour among Muslims in Brunei Darussalam towards environmental issues.