The municipality of Yerevan cooperates with more than 30 foreign cities and 5 international organizations creating a vast contractual field and programs to be implemented jointly. The recent initiatives are aimed at cooperation efficiency with partner and sister cities of Yerevan and the further expansion of international relations. Yerevan fulfills the most comprehensive programs of cooperation with Moscow, Lyon, Rostov-on-Don, Saint Petersburg and other cities. In 2009 mutual visits in different formats have also become more active in the sphere of foreign relations, the evidence of which is the number of delegations arrived in Yerevan to participate in "Erebuni-Yerevan" celebration, which has increased in comparison with the previous years. New relations have been established with Sophia, Delhi and Kaliningrad, the cooperation approaches with Montreal and Carara (Italy) have been reconsidered.

Preliminary work is underway on establishing relations with Warsaw, Shiraz and London. The interest of Armenian diaspora towards the capital has also increased which will  promote the process of finding new partners and establishing effective cooperation, especially from the point of view of Yerevan investment field expansion.
In 2010 the main directions of Yerevan municipality in the sphere of international cooperation are:
*ensuring the continuation of the cooperation developing between sister and partner cities of Yerevan  and creating new relations, active cooperation within the scope of international and regional structures,
*purposeful use of adequate environment for international and regional programs implementation,
*promotion of finding new partners and establishing efficient cooperation, especially in the expansion of the investment field of Yerevan; study present international experience and the programs and projects to be implemented, cooperation expansion in primary deirections of the activity,
*involving foreign investments in Yerevan, joint programs implementation,
* promotion of tourism development.
Read more about sister and partner cities of Yerevan in "Sister cities" and "Partner cities" sections.