Kwabena Baah Duodu was born on 26 February 1949 in Dwenase in the Eastern Region of Ghana.
In December 1985, Baah-Duodu was assigned to Ghana's Permanent Mission to the United Nations at Geneva.
In November 1998, Baah-Duodu opened the Ghana Embassy in the Republic of Korea and served as Chargé d'Affaires until August 2001.
Baah-Duodu was then promoted to Supervising Director of Administration at the Ministry of Foreign Affairs before subsequently given an appointment as Ambassador of Ghana to Switzerland and Austria from 2006 and 2008 and Permanent Representative to the European Offices of the UN and other International Organizations in the two countries from 2006 to 2009.
[3] In 2009, he retired from the Ghana Foreign Service and joined the United Nations Conference on Trade and Development (UNCTAD) as a Senior Adviser.