John Thomas Ness (20 August 1871 – 24 January 1947) was an Australian politician.He was born at Young to shipbuilder Thomas Ness and Isabella, née Sellars. After attending public schools he was farming wheat at Temora from around 1894 to 1904. On 1 January 1898 he married Bertha Mary Ann Matuschka in New Zealand, with whom he would have four children. In 1904 he became a produce and fuel merchant, later establishing John Ness, Son & Co.