James Bartholomew Cummings AM (14 November 1927 – 30 August 2015), 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. As a racing icon he was generally considered in the 20th century, equivalent as what Etienne L. de Mestre had been in the 19th century.