Eighty one percent of Iraqis reported helping someone they didn't know in the previous month, in a global poll commissioned by the Charities Aid Foundation (CAF).
For the first time since CAF began the poll in 2010, more than half of people in 140 countries surveyed said they had helped strangers - with many of the most generous found in countries hit hard by disaster and war.
Despite suffering instability and violence, Iraq has twice been ranked top in terms of helping strangers. Libya, with its own internal conflict, was second on the list this year and Somalia, embroiled in civil war for 25 years, fourth.
In terms of donations to charity, Myanmar held the top position, with nine out of ten surveyed saying had they given during the previous month.
The Southeast Asian country also retained its position for the third year at the top of the World Giving Index - a combined measure of respondents reporting help to strangers, donations of money and time spent volunteering.
The report said the generous giving reflected the practice of "Sangha Dana", where the country's Theravada Buddhist majority donate to support those living a monastic lifestyle.
The United States ranked second on the combined measure of generosity.
The World Giving Index is based on data form a global poll by market research firm Gallup of 140 countries.
(Reporting by Matthew Ponsford, Editing by Ros Russell.; Please credit the Thomson Reuters Foundation, the charitable arm of Thomson Reuters, that covers humanitarian news, women's rights, traficking, property rights and climate change. Visit news.trust.org)