Bio-polymerized Sulfur for Sustainable Practice in Applied Sciences and Engineering explores innovative approaches in sustainable chemistry by leveraging renewable resources and sulfur as foundational elements for creating sustainable functional materials. The book highlights the potential of bio-polymeric materials derived from sulfur and renewable sources, offering new avenues for environmentally-friendly manufacturing. Additionally, the text delves into lifecycle assessment studies and the principles of a circular economy, emphasizing the importance of sustainability in modern engineering. The work emphasizes the criticality of sustainable practices, highlighting the intersection of bio-polymeric materials and circular economy principles, ultimately guiding the reader towards a more sustainable future. The book also presents an in-depth analysis of bio-polymerized sulfur's role in promoting sustainable development. It discusses how polymerized sulfur can be used to develop engineered products that align with sustainability goals.