Plant protein-derived peptides (PPDP) are gaining attention for their potential in sustainable food systems and applications. This review discusses various plant protein sources, extraction methods, functional properties, and biological activities of PPDP. The review highlights the importance of PPDP in improving food quality, health benefits, and sustainable food production. Plant proteins such as legumes, cereals, pseudocereals, seeds, and nuts are rich in protein and can be used to produce PPDP. The extraction of PPDP can be done through microbial fermentation and enzymatic hydrolysis, which are sustainable methods. PPDP have various functional properties such as foaming, emulsification, water and fat holding capacity, and biological activities such as antihypertensive, antioxidant, antimicrobial, and immunomodulatory effects. The review also discusses the stability and bioavailability of PPDP, which are crucial for their application in food and nutraceutical industries. The study emphasizes the potential of PPDP in promoting health and wellbeing through their bioactive properties. The review concludes that PPDP have significant potential in sustainable food systems and applications, and further research is needed to fully explore their benefits.Plant protein-derived peptides (PPDP) are gaining attention for their potential in sustainable food systems and applications. This review discusses various plant protein sources, extraction methods, functional properties, and biological activities of PPDP. The review highlights the importance of PPDP in improving food quality, health benefits, and sustainable food production. Plant proteins such as legumes, cereals, pseudocereals, seeds, and nuts are rich in protein and can be used to produce PPDP. The extraction of PPDP can be done through microbial fermentation and enzymatic hydrolysis, which are sustainable methods. PPDP have various functional properties such as foaming, emulsification, water and fat holding capacity, and biological activities such as antihypertensive, antioxidant, antimicrobial, and immunomodulatory effects. The review also discusses the stability and bioavailability of PPDP, which are crucial for their application in food and nutraceutical industries. The study emphasizes the potential of PPDP in promoting health and wellbeing through their bioactive properties. The review concludes that PPDP have significant potential in sustainable food systems and applications, and further research is needed to fully explore their benefits.