Thomas Gordon Hartley (9 January 1931 in Beaumont, Texas – 8 March 2016 in Canberra, Australia) was an American botanist.
[1] In 1955 Hartley graduated in botany with the academic degree Bachelor of Science at the University of Wisconsin-Eau Claire.
[2] From 1961 to 1965 he led an expedition of the Commonwealth Scientific and Industrial Research Organisation to New Guinea for the study of phytochemicals.
In 1971, he became a senior research scientist at CSIRO Plant Industry, Canberra, Australia.
In 1969, botanist Hermann Otto Sleumer named a genus of plants from New Guinea, Hartleya (from the family Stemonuraceae) in Hartley's honour.