Plant-derived biopolymers, also known as natural polymers, have been extensively studied for sustainable and eco-friendly technologies. This research paper explores the extraction, characterization, and application of biopolymer carrageenan in screen-printed conductive ink formulation. Carrageenan was extracted from red algae (Rhodophysea). Conductive inks fabricated from graphite as a conductive agent and carrageenan with carboxymethyl cellulose as adhesives.  The use of carrageenan enhances the conductivity of the produced ink with respect to carboxymethyl cellulose. The high conductivity of carrageenan based conductive ink is due to the amorphous structure of carrageenan and the presence of sulfate groups in its chain structure.