Dear Colleagues:
Biopolymer-based biomaterial inks represent a rapidly advancing field at the intersection of materials science, biotechnology, and additive manufacturing. These inks, derived from natural polymers such as hyaluronic acid, chitosan, carrageenan, and collagen, offer biocompatibility, biodegradability, and tunable mechanical properties ideal for biomedical applications. This special issue focuses on the formulation strategies, crosslinking methods, rheological optimization, and printability of biopolymer inks for use in tissue engineering, wound healing, drug delivery, biofabrication, and so on. Emphasis is placed on the integration of functional additives, the development of stimuli-responsive systems, and scalable manufacturing approaches. The issue aims to bridge the gap between laboratory-scale innovations and clinical or industrial implementation, highlighting the translational potential of biopolymer-based bioinks.