Iranian Foreign Minister Javad Zarif met with his Indian counterpart in New Delhi, days after India decided to follow US restrictions on buying Iranian oil.
India's external affairs ministry said Zarif held discussions with Indian External Affairs Minister Sushma Swaraj on issues of mutual interest, including the evolving situation in Afghanistan. It didn't give any details.
Iran is the third-largest oil supplier for India after Iraq and Saudi Arabia. India bought 23.6 million tons of Iranian oil in the financial year ending in March 2019.
Put into a difficult situation by US pressure, India said it would buy crude oil from other major oil producing countries to protect its interests.
Washington has renewed sanctions on Iran in an attempt to eliminate all of its oil revenue, which it says funds destabilizing activity throughout the Middle East and beyond.
In November, the US granted a six-month waiver to India and seven other countries to continue importing oil from Iran. The waiver ended early this month.
Indo-Iran ties have expanded in various fields in recent years.
During his visit to India last year, Iranian President Hassan Rouhani said Iran and India were prepared for joint ventures in gas and petroleum. He sought India's investment in these areas, as well as in industry and mining.
India is helping Iran develop Chabahar Port on the Gulf of Oman for trade with Afghanistan and Central Asia, bypassing Pakistan, which has refused to provide New Delhi access through a land route.