James Bartholomew Cummings, also known by his initials J. B. Cummings, was one of the most successful Australian racehorse trainers. He was known as the Cups King, referring to the Melbourne Cup, as he won 'the race that stops a nation' a record twelve times. During his lifetime, Cummings was considered an Australian cultural icon and an Australian National Living Treasure. His status as a racing icon in the 20th century was generally considered equivalent to that of Etienne L. de Mestre in the 19th century.

The Melbourne Cup is an annual Group 1 Thoroughbred horse race held in Melbourne, Australia, at the Flemington Racecourse. It is a 3200-metre race for three-year-olds and older, conducted by the Victoria Racing Club that forms part of the Melbourne Spring Racing Carnival. It is the richest two-mile handicap in the world and one of the richest turf races. The event starts at 3:00 pm on the first Tuesday of November and is known locally as "the race that stops the nation".