The paper provides preliminary results of the comparative overview of e-participation projects development within the e-governance institutional structure in the Eurasian Economic Union (EAEU) member-states. The authors analyze (1) Legal base on e-governance and e-participation; (2) E-governance institutions and stuff; (3) Participation instruments of public engagement. In future the authors plan to elaborate the methodology of e-participation processes monitoring in the countries of the EAEU, and to examine the issue of e-governance institutions effectiveness in the EAEU region.