Morris Tanenbaum (born November 10, 1928) is an American physical chemist and executive who has worked at Bell Laboratories and AT&T Corporation. Tanenbaum made significant contributions in the fields of transistor development and semiconductor manufacturing. Although it was not made public at the time, he developed the first silicon transistor, demonstrating it on January 26, 1954 at Bell Labs. He also helped develop the first gas-diffused silicon transistor, which convinced Bell administrators to support the use of silicon over germanium in their transistor design. He later led a team that developed the first high-field superconducting magnets.