Islamophobia is the fear of, hatred of, or prejudice against the religion of Islam or Muslims in general, especially when seen as a geopolitical force or a source of terrorism.

The scope and precise definition of the term Islamophobia, is the subject of debate. Some scholars consider it to be a form of xenophobia or racism, some consider Islamophobia and racism to be closely related or partially overlapping phenomena, while others dispute any relationship; primarily on the grounds that religion is not a race.

The causes of Islamophobia are also the subject of debate, most notably between commentators who have posited an increase in Islamophobia resulting from the September 11 attacks, the rise of the militant group Islamic State, other terror attacks in Europe and the United States by Islamic extremists, those who associated it with the increased presence of Muslims in the United States and in the European Union, and others who view it as a response to the emergence of a global Muslim identity.

On 15 March 2022, the United Nations General Assembly adopted a resolution by consensus which was introduced by Pakistan on behalf of the Organisation of Islamic Cooperation that proclaimed March 15 as 'International Day to Combat Islamophobia'.