John Darling, Jr. (24 January 1852 – 27 March 1914) was a Scottish born South Australian businessman and politician. He was a member of the South Australian House of Assembly from 1896 to 1905, representing the electorates of East Torrens (1896-1902) and Torrens (1902-1905). He was Leader of the Opposition from 1902 to 1904. After leaving politics, he was chairman of the board of directors of BHP from 1907 to 1914.