Refugees of Iraq are Iraqi nationals who have fled Iraq due to war or persecution. Throughout the past 30 years, there have been a growing number of refugees fleeing Iraq and settling throughout the world, peaking recently with the latest Iraq War. Precipitated by a series of conflicts including the Kurdish rebellions during the Iran–Iraq War (1980 to 1988), Iraq's Invasion of Kuwait (1990) and the Gulf War (1991), the subsequent sanctions against Iraq, and culminating in the violence during and after the American-led invasion and occupation of Iraq, millions have been forced by insecurity to flee their homes in Iraq. Unlike most refugees, Iraqi refugees have established themselves in urban areas in other countries rather than in refugee camps. In April 2007, there was an estimate of over 4 million Iraqi refugees around the world, including 1.9 million in Iraq, 2 million in neighboring Middle East countries, and around 200,000 in countries outside the Middle East. The United Nations High Commissioner for Refugees (UNHCR) has led the humanitarian efforts for Iraqi refugees. The Iraqi displacement of several million is the largest in the Middle East, and is much larger than the number of Palestinians who were displaced in 1948 during the creation of the state of Israel.
On August 2, 1990, Iraq invaded Kuwait. The ensuing 1991 Gulf War produced nearly three million refugees, many of them from Iraq. Almost all them left Iraq and Kuwait before the war started or after Desert Storm was over. The largest groups were the Kurds and Shi'as fleeing Saddam Hussein after a failed uprising, as well as the Palestinians. Palestinians were the second largest group uprooted by the war, and 300,000 resettled in Jordan. There were a smaller number of Iraqi Arab refugees, only about 37,000, mostly shia who moved to Saudi Arabia. About 100,000 Iraqis escaped to Jordan and Syria.