In today’s world, the need for sustainable development has reached an unprecedented level of urgency. Our planet is grappling with numerous environmental crises, including the escalating threat of climate change, pervasive pollution, and the rapid depletion of natural resources. In response to these challenges, a promising path forward involves utilizing renewable resources as primary sources for biomaterials and tissue engineering applications. This approach not only mitigates environmental impacts but also advances medical technologies. Bioceramics, particularly calcium phosphates, have gained significant traction as synthetic bone graft substitutes due to their remarkable similarity to the mineral component of natural bone tissue. In line with sustainability and the principles of a circular economy, these bioceramics can be derived from various waste materials, such as fish scales, fish bones, eggshells, and seashells. Additionally, marine sponges and agricultural waste products (e.g., rice straw and rice husk) present a sustainable and economical source of silica with applications in biomedicine, targeted bioglasses synthesis, and drug delivery. As research in sustainable bioceramics advances, further improvements in material properties, processing techniques, and clinical outcomes are anticipated, potentially revolutionizing the field of bone tissue engineering and regenerative medicine.