Dmitry Mariyasin is the Deputy Executive Secretary (No2) of the United Nations Economic Commission for Europe (UNECE) since March 2021.

Prior to joining UNECE, he was the Resident and Deputy Resident Representative of UNDP in Armenia (2017-2021). He also served as the Team Leader, Partnerships in UNDP Regional Bureau for Europe and the CIS region (2011-2016) and other positions with UNDP at global, regional and country level.

 Mr. Mariyasin holds a PHD in Economics from the Moscow State University, and a MA in Public Administration from the New York University