Zardari, who will lead the Pakistani delegation to the summit, is expected to hold several bilateral meetings in the Iranian capital during August 29-31, the officials said.
Zardari last met Singh in April during a day-long private visit to India [ Images ] to pray at a Sufi shrine in Ajmer.
Besides Zardari, Singh is expected to hold meetings with Iranian President Mahmoud Ahmadinejad [ Images ] 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 [ Images ] position on key international and regional issues, including the situation in Afghanistan.
During the two-day Summit on August 30-31, leaders and delegates from other countries will exchange views on the latest global developments and issues related to Non-Aligned Movement.