Suicide is a major public health issue globally. Although its widespread impact is undeniable, the risk factors are not yet fully understood, and attempts to accurately gauge risk have proven insufficient. There is a growing body of evidence that connects pollution in many forms—air, water, noise, soil, and chemical—to a number of mental health conditions, such as stress, anxiety, and depression, which are important risk factors for suicide. Furthermore, numerous demographic variables, including geography and meteorology, have a major impact on suicide. Hence, the data linking environmental pollutants to an increase in suicide rates is examined in this chapter. Additionally, it emphasizes the necessity for comprehensive public health strategies that address mental health and environmental issues.