SK Bioscience (Korean: SK바이오사이언스) is a South Korean biotechnology company that produces vaccines and other products and is a subsidiary of SK Chemicals.

SK Chemicals was responsible for all research and development (R&D), production, and sales of chemically synthesized pharmaceuticals, biopharmaceuticals, natural medicines, blood products, and vaccines, but the blood products division was spun off into SK Plasma and the vaccine division into SK Bioscience in July 2018.

[1] In 2024, it acquired the German global pharmaceutical and biotechnology company Cloquet Group and IDT Biologica, a Contract manufacturing organization (CMO) specialized in pharmaceuticals.

[4] The headquarters is located in Bundang District, Seongnam in Gyeonggi-do.

The first cell culture vaccine factory in South Korea is SK Bioscience's Andong vaccine factory.