• Jack Fields
  Jack Fields
  Jack Milton Fields, Jr. , is a Texas businessman and a former Republican member of the United States House of Representatives from a Houston-based district....
  
   (born 1952), Texas businessman and former Republican member of the United States House of Representatives
• Jackie Fields
  Jackie Fields
  Jackie Fields was an American professional boxer who won two world championship titles.-Personal life:...
  
  , American boxer
• Patch panel
  Patch panel
  A patch panel or patch bay is a panel, typically rackmounted, that houses cable connections. One typically shorter patch cable will plug into the front side, whereas the back holds the connection of a much longer and more permanent cable...
  
  , aka Jack fields, devices used to route electrical signals

See also

• John Field (disambiguation)
• John Charles Fields
  John Charles Fields
  John Charles Fields, FRS, FRSC was a Canadian mathematician and the founder of the Fields Medal for outstanding achievement in mathematics...
  
  , Canadian mathematician