Eli Rotenberg (born around 1965) is an American physicist. He works at the Advanced Light Source (ALS) synchrotron, and was named a fellow of the American Physical Society in recognition of his work in photoemission spectroscopy.
Rotenberg studied at Cornell University, and obtained a BS in 1987. He conducted his PhD studies at the University of California, Berkeley, and graduated in 1993 with a thesis entitled "The Relationship Between Structure and Core-Level Shifts in Thin Epitaxial Films of CaF2 and SrF2 on Si(111)". His thesis advisor was Marjorie Olmstead. Rotenberg then moved to the University of Oregon for postdoctoral work. In 1996, he became a staff scientist at ALS at the Lawrence Berkeley National Laboratory, where he has continued to work as of 2025. In this position, he serves as the project leader of the MAESTRO (Microscopic and Electronic STRucture Observatory) beamline.