Tim Stelzer is an associate professor of physics, and distinguished teacher-scholar at the University of Illinois. He received a B.S in physics from St. Johns University in 1988 and a Ph.D. in theoretical particle physics from the University of Wisconsin at Madison in 1993. His particle physics research has focused on physics at hadron colliders such as the Tevatron at Fermi National Accelerator Laborarory and the LHC in Geneva Switzerland. Several of his papers are among the top cited in high energy physics.

Tim worked on the award winning transformation of the introductory physics courses at the University of Illinois and is a founding member of their Physics Education Research group. His education research has focused on making appropriate use of technology to improve student learning. He is a co-inventor of the iclicker personal response system and is coauthor of the "smartPhysics" learning system. Tim is a regular on the University’s　 "Incomplete List of Teachers Ranked Excellent by Their Students," and received the 2013 Excellence in Education Award from the American Physical Society .