Angela M. Belcher is a materials scientist, biological engineer, and the James Mason Crafts Professor of Biological Engineering and Materials Science at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts, United States. She is director of the Biomolecular Materials Group at MIT, a member of the Koch Institute for Integrative Cancer Research, and a 2004 MacArthur Fellow. In 2019, she was named head of the Department of Biological Engineering at MIT. She was elected a member of the National Academy of Sciences in 2022.