Robert James Heffron, also known as Bob Heffron or R. J. Heffron, was a long-serving New South Wales politician, union organiser and Labor Party Premier of New South Wales from 1959 to 1964. Born in New Zealand, Heffron became involved in various Socialist and labour movements in New Zealand and later Australia before joining the Australian Labor Party. A prominent unionist organiser, we was gaoled for "conspiracy to strike action". He was later elected to the Parliament of New South Wales for Botany in 1930. However his disputes with party leader Jack Lang led to his expulsion from the ALP in 1936 and Heffron formed his own party from disgruntled Labor MPs known as the Industrial Labor Party. The success of his party enabled his readmission to the party and his prominence in a post-Lang NSW Branch which won office in 1941.

The premier of New South Wales is the head of government in the state of New South Wales, Australia. The Government of New South Wales follows the Westminster Parliamentary System, with a Parliament of New South Wales acting as the legislature. The premier is appointed by the Governor of New South Wales, and by modern convention holds office by their ability to command the support of a majority of members of the lower house of Parliament, the Legislative Assembly.