Main conclusion <p>Baltic Sea macroalgae exhibit unique bioactive compounds and diverse applications, supporting sustainable industries in food, cosmetics, and medicine while promoting environmental restoration.</p> Abstract <p>Common in the Baltic Sea, macroalgae hold great biotechnological and commercial promise in various industries, such as food, cosmetics, and medicines. The present study investigates the various uses of the Baltic macroalgae, emphasizing their nutritional worth, which encompasses vital amino acids, vitamins, and minerals, as well as their suitability as natural gelling agents, food additives, and dietary supplements. Additionally, these macroalgae's bioactive chemicals show promise as therapeutic agents due to their antiviral and anticancer capabilities, making them essential assets for the pharmaceutical and medical sectors. A lot of research has been done on macroalgae, but not much on Baltic species. With an emphasis on their unique qualities and possible benefits to environmental preservation and sustainability, this paper attempts to present a thorough review of the uses of the Baltic macroalgae.</p>