Tuna oligopeptides are low‑molecular‑weight bioactive peptides derived from tuna muscle proteins, widely employed in nutraceuticals, functional foods, cosmetics, and animal‑feed formulations for their antioxidant, anti‑inflammatory, and skin‑rejuvenating properties. The Tuna Oligopeptides market size was estimated at approximately USD 150 million in 2025, reflecting robust demand for marine‑derived functional ingredients. This market overview provides an executive‑ready growth outlook, market forecast, and industry expansion analysis, covering product types (hydrolyzed peptides, peptide extracts, collagen peptides), applications (dietary supplements, skin‑care, functional beverages), and end‑users (supplement manufacturers, cosmetic firms). Forecasts indicate the market will reach around USD 260 million by 2033, expanding at a CAGR of 8.1% during 2026‑2033, driven by rising health consciousness, aging populations, and increasing regulatory support for marine‑based nutraceuticals.