Masaru Tomita (Japanese: 冨田 勝, Hepburn: Tomita Masaru, born December 28, 1957) is a Japanese molecular biologist and computer scientist, best known as the director of the E-Cell simulation environment software and/or the inventor of GLR parser algorithm. He is a professor of Keio University, president of the Institute for Advanced Biosciences, and the founder and board member of Human Metabolome Technologies, Inc. He is also the co-founder and on the board of directors of The Metabolomics Society. His father is composer Isao Tomita.