Zardari, who will lead the Pakistani delegation to the Summit, is expected to hold several bilateral meetings in the Iranian capital during Aug 29-31, the officials said.
Zardari last met Singh in April during a day-long private visit to India to pray at a Sufi shrine in Ajmer. Besides Zardari, Singh is expected to hold meetings with Iranian President Mahmoud Ahmadinejad and leaders of Nepal and Bangladesh, Indian officials have said.
Zardari will be accompanied by Foreign Minister Hina Rabbani Khar, who will use the multinational forum to project Islamabad's position on key international and regional issues, including the situation in Afghanistan.
During the two-day Summit on Aug 30-31, leaders and delegates from other countries will exchange views on the latest global developments and issues related to Non-Aligned Movement.