It comes after the capture by Turkish-led forces of a Kurdish stronghold in northern Syria and amid Turkish threats to extend the massive operation further east.
The meeting will be hosted by Turkish President Recep Tayyip Erdogan and will be the second such tripartite summit following the previous one last November in the Russian Black Sea resort of Sochi, Xinhua reported.
The summit will be attended by Russian President Vladimir Putin and his Iranian counterpart Hassan Rouhani as the three leaders will seek to salvage their efforts to end the seven-year Syrian conflict.
As part of peace talks in the Kazakh capital Astana sponsored by Ankara, Moscow and Tehran, the three countries' foreign ministers met on Friday and discussed preparations for next month's summit, the Turkish foreign ministry said in a statement.
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