Dessima D Williams is a Grenadian diplomat and former Ambassador to the United Nations from Grenada who was reappointed to the ambassadorship in 2008.

Williams works in her own country to highlight the challenges of Small Islands Developing States (SIDS) for the education of rural boys and girls.

Williams served as Grenada's ambassador to the Organization of American States during People's Revolutionary Government from 1979 to 1983.

[5] The agents of the U.S. Immigration and Naturalization Service apprehended her as she was leaving a forum on "Peace in the Americas" at Howard University.

Of the arrest, Willams said: "I had just made the keynote address at a conference on Peace in the Caribbean at Howard University.

All I knew was that there were these aggressive, hostile white males speeding off with me in a civilian car.

"[5] Dessima has taught at secondary, college and university levels and is an advocate for the rights of women and girls, for farmers and for rural development.

In 2009, she returned to diplomacy as Ambassador Extraordinary and Plenipotentiary of Grenada to the United Nations, serving for over four years, three of those concurrently as Chair of the Alliance of Small Island Developing States.

In 2016 Dessima Williams was appointed as Special Adviser for Implementation of the Sustainable Development Goals at the United Nations.