John Decker est né le 8 novembre 1895 en Californie, États-Unis. Il est connu pour Cruise of the Zaca (1952). Il est mort le 7 juin 1947 en Californie, États-Unis.
Decker did a painting of the Swiss Family Robinson cast adrift in a storm that was featured on the huge 24 sheet movie poster made for the 1940 version. 38 of these were printed.