The Iranian economy minister, accompanied by his deputy Behrouz Alishiri, is due to address the ECO meeting as chairman of the Council of Ministers.
Tayyebnia will also attend the Seventh Astana Economic Conference to be held in the Kazakh capital on May 20-21.
The Second Conference of Confronting International Financial Crisis is also slated to be held in Astana during the said period.
Senior officials from over 150 countries are in Kazakhstan to attend the Seventh Astana Economic Conference in that country.
Tehran hosted the 21st Meeting of the Council of Minister (COM) of the ECO on November 24-26.
ECO is an intergovernmental regional organization established in 1985 by Iran, Pakistan and Turkey, which provides a platform to promote economic, technical and cultural cooperation among member states.
The organization was expanded in 1992 to include seven new members, including Afghanistan, Azerbaijan, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan.