Jessica Melbourne-Thomas (born 17 May 1981) is a marine, Antarctic, and climate change scientist with the Commonwealth Scientific and Industrial Research Organisation, Australia.

[9] She was named Tasmania's Young Tall Poppy of the Year in 2015 and was one of Science and Technology Australia's first 30 Superstars of STEM.

[10] Melbourne-Thomas was also the co-founder, along with business entrepreneur Fabian Dattner, of the first Homeward Bound voyage, which is an Australian-led, global initiative to foster women's leadership in science.

[14] When challenges prevented the group of 76 global women scientists of varying specialities from sailing out of Australia, Melbourne-Thomas worked to reorganize the launch out of Ushuaia, Argentina.

[15] She was one of 12 noted female scientists to be featured as a constellation on the ceiling of the Grand Central Station (New York City) as part of GE's Balance the Equation Initiative.