This paper explores the role of green marketing in promoting sustainable development and its impact on consumer behavior. Green marketing involves the integration of environmental considerations into marketing practices to address consumer demand for eco-friendly products and services. Through an extensive review of literature and case studies, this paper highlights the growing importance of green marketing as a strategic tool for businesses aiming to achieve a competitive advantage while contributing to environmental sustainability. Key topics include the influence of green marketing on consumer purchase intentions, the challenges and opportunities faced by businesses in adopting green practices, and the role of green marketing in achieving sustainable development goals (SDGs) in developing countries, particularly in Bangladesh. The paper also examines the green marketing mix, which encompasses product, price, place, and promotion strategies that align with environmental objectives. Findings suggest that green marketing not only enhances consumer satisfaction and loyalty but also plays a crucial role in advancing global sustainability efforts.