Stefano Profumo (born 25 January 1978) is an Italian-American theoretical physicist and professor at the University of California, Santa Cruz. He works on particle dark matter, high-energy astrophysics, and black hole physics. He is a Fellow of the American Physical Society. and a recipient of the 2009 Department of Energy's Outstanding Junior Investigator Award.
Profumo studied physics at the University of Pisa (B.Sc., 2001) and theoretical physics at the Scuola Normale Superiore di Pisa (M.Sc., 2001). He earned a Ph.D. in elementary particle theory at the SISSAâÂÂISAS in Trieste, Italy, in 2004. He subsequently held postdoctoral appointments at Florida State University (2004âÂÂ2005) and the California Institute of Technology (2005âÂÂ2007).
Profumo joined the faculty of the Department of Physics at the University of California, Santa Cruz in 2007 as an assistant professor. He became associate professor with tenure in 2011 and full professor in 2015. Since 2015 he has served as director of graduate studies in the physics department, and in 2024 he was appointed Associate Dean for Graduate Studies and Postdoctoral Affairs in the Physical and Biological Sciences Division. He has also been serving as Deputy Director for Theory at the Santa Cruz Institute for Particle Physics since 2011.
Profumo's research covers particle physics beyond the Standard Model, models of baryogenesis, and astro-particle physics including dark matter searches, high-energy astrophysical phenomena, and black hole physics. His work has been often featured in the popular press.
Profumo is the co-author of the invited review "Dark Matter" in the Review of Particle Physics (with Laura Baudis, 2020âÂÂpresent). His textbook An Introduction to Particle Dark Matter was published by World Scientific in 2017. As of 2025, his work has been cited more than 38,000 times, with an h-index of 81, according to Google Scholar.
He was a founding editor and is the Editor-in-Chief of Physics of the Dark Universe, he is Editor-in-Chief of Astrophysical Frontiers, he is on the editorial board of Asymmetry and of Particles in the Phenomenology and Physics Beyond the Standard Model section, he is a section board member in the Particles journal (Astroparticle Physics & Cosmology section).