John Kappler

John W. Kappler (born 22 December, 1943, in Baltimore, Maryland) is a professor in the Department of Integrated Immunology at National Jewish Health. His principal research is in T cell biology, a subject he collaborates on with his wife Philippa Marrack. In 1983 they discovered the T cell receptor, together with Ellis Reinherz and James Allison.

• 1986 - Appointed Investigator, Howard Hughes Medical Institute
• 1989 - Elected member, National Academy of Sciences
• 1993 - Cancer Research Institute William B. Coley Award
• 1994 - Louisa Gross Horwitz Prize for Biology or Biochemistry (Columbia University)
• 2015 - Wolf Prize in Medicine