Sustainability in tourism explores the intricate relationship between tourism and sustainability, highlighting the importance of sustainable practices in preserving the environment, promoting social equity, and fostering economic development. This manuscript is a comprehensive guide structured to provide an in-depth exploration of key sustainability principles and their application within the tourism sector. It demonstrates how sustainable tourism can lead to the preservation of natural resources, protection of biodiversity, and reduction of pollution and waste. Furthermore, this book underscores the significance of empowering indigenous communities, promoting social inclusivity, and preserving cultural identities and intangible heritage. It also focuses on supporting small-scale enterprises, creating employment opportunities, and enhancing local economic linkages. Therefore, by providing valuable insights and practical guidance for fostering a more sustainable and responsible tourism industry, it offers advocates to support advancing sustainability in tourism with the ensure that the advantages are experienced by both current and future generations.