Reginald Carr or Reg Carr may refer to:
Reg Carr (footballer) (19342011), Australian rules footballer Reginald Carr (librarian) (born 1946), former Bodley's Librarian at the University of Oxford Reginald Carr (born 1977), American murderer and perpetrator of the 2000 Wichita Massacre Kansas v. Carr, 2016 U.S. Supreme Court case arising from the Wichita Massacre