Joke Waller-Hunter (15 November 1946 - 14 October 2005) was a Dutch United Nations official who worked on several environmental issues including the Kyoto Accord.
She started working for the province of North Holland, and after that for many years at the Ministry of Housing, Spatial Planning and the Environment.
Her efforts at the Earth Summit in Rio de Janeiro in 1992 drew much attention, and even earned her the moniker Dutch Maffia amongst opponents of a treaty.
She was the first UN Director for the United Nations Commission on Sustainable Development, a position which she served from 1994 to 1998.
She was awarded an honorary doctorate from the Vrije Universiteit in September 2005 citing her contribution to society through her outstanding work in the field of sustainable development and protection of the global climate.