Purpose of Review <p>This review explores the potential of pineapple <i>(Ananas comosus</i> L.) waste as a valuable source for the biocircular economy. It investigates the chemical composition, functional and biological properties of pineapple waste, and recent advancements in recovery technologies. The focus of this review is on how pineapple waste can be transformed into high-value bioactive compounds and functional food ingredients through biochemical and biotechnological methods.</p> Recent Findings <p>Recent studies have shown that pineapple waste contains soluble and insoluble dietary fiber, bioactive compounds like bromelain and phenolic compounds, which have significant biological properties, including antioxidant, anti-cancer, and anti-microbial properties. Advances in extraction and fermentation technologies have improved recovery efficiency and application potential in developing functional foods and nutraceuticals. The review also highlighted the growing interest in incorporating pineapple waste valorization into sustainable and circular production systems.</p> Summary <p> The review concludes that pineapple waste is a promising and underutilized source of bioactive compounds with significant functional and therapeutic potential. It suggests that transforming pineapple waste into value-added products can reduce waste and promote sustainable food innovation. However, further research is needed to characterize its molecular components, assess its health effects, and optimize scalable processing technologies. These future efforts are crucial for integrating pineapple waste into functional food development and the biocircular economy.</p>