Organizations: Robert Costanza (born September 14, 1950) is an American/Australian ecological economist and Professor at the UCL Institute for Global Prosperity, University College London.

He is a Fellow of the Academy of the Social Sciences in Australia[2] and a Full Member of the Club of Rome.

Prior to moving to Vermont in August 2002, Costanza was director of the University of Maryland Institute for Ecological Economics, and a professor at University of Maryland's Center for Estuarine and Environmental Science, at the Chesapeake Biological Lab on Solomons Island, MD.

He is co-founder and past president of the International Society for Ecological Economics and he was founding chief editor of the society's journal, Ecological Economics from its inception in 1989 until 2002.

He is a senior fellow at the Stockholm Resilience Centre, Stockholm, Sweden;[7] Affiliate Fellow at the Gund Institute for Environment at the University of Vermont; and a co-chair of the Ecosystem Services Partnership.