Coastal tourism is one of the fastest-growing sectors globally, contributing significantly to regional economies while posing substantial environmental challenges. Waste generation in coastal tourism destinations—particularly plastic, food, and marine litter—has become a critical sustainability issue. This research paper examines waste management practices in coastal tourism areas, analyzes their effectiveness, and identifies challenges and future directions. Drawing on case studies, field observations, and literature from 2010–2025, the study highlights the role of tourism stakeholders, governance mechanisms, visitor behaviour, and technological innovations. Results reveal that although several coastal destinations have adopted waste management strategies, implementation gaps persist due to infrastructure limitations, inadequate policy enforcement, seasonal fluctuations, and low community participation. Strengthening circular economy models, integrating smart waste systems, and promoting co-responsibility among tourists and local communities are essential for long-term coastal sustainability.