Thomas Thewes (December 9, 1931 – September 28, 2008) was an American entrepreneur and businessman.
He was vice chairman and a co-founder of Compuware Corporation along with Peter Karmanos and Allen Cutting.
Thewes was a co-owner of three hockey teams, including the Carolina Hurricanes (NHL), the Plymouth Whalers (OHL), and the Florida Everblades (ECHL).
He and his wife, Beverly, resided in metropolitan Detroit and had six children.
He died after a two-year fight with leukemia.