Reinhard Stock (born 1938) is a German experimental physicist, specializing in heavy-ion physics.
Stock studied at Heidelberg University, where he received his doctorate with thesis advisor Rudolf Bock.
In a conference held in Turin in May 1999, the hundreds of CERN scientists from 22 countries reached a consensus that their combined results confirm the hypothesis that quarks become deconfined at high energy densities.
He received in 1988, jointly with Hans Gutbrod, the German Physical Society's Robert Wichard Pohl Prize.
Stock was cited "for his outstanding contributions to the development of the field of relativistic nucleus-nucleus collisions by initiating research through the innovative use of high-energy accelerators (BEVALAC at LBL, SPS at CERN) which indicated the existence of a new form of matter".