John L. Esposito, a professor at Georgetown University who helped create the way America studies Islam in universities, died on July 15, 2026, at the age of 86 (Al Jazeera). After his death, scholars, civil rights groups, and even a foreign head of government publicly mourned him. That range of tribute reflects how widely his work reached — from classrooms to government policy debates.

Born in Brooklyn, New York, in 1940, Esposito studied under Isma'il Raji al-Faruqi, a Palestinian-American scholar who helped establish the study of Islam as an academic subject in North America. Esposito spent nearly 20 years at the College of the Holy Cross in Massachusetts, where he taught world religions, before moving to Georgetown University. There, he held a professorship that spanned religion, international affairs, and Islamic studies — placing him at the meeting point of faith, regional expertise, and U.S. foreign policy.

At Georgetown, Esposito founded the Center for Muslim-Christian Understanding in 1993. The center was later renamed the Prince Alwaleed bin Talal Center for Muslim-Christian Understanding after a large donation from the Saudi prince. Think of it as a research hub where scholars studied how Muslims and Christians relate to each other, how religion shapes politics in Muslim-majority countries, and how people of different faiths can talk to each other. In later years, Esposito also started the Bridge Initiative, a project focused on tracking and pushing back against Islamophobia — which means prejudice or hostility toward Muslims.

Over his career, Esposito wrote, co-wrote, or edited more than 50 books, translated into 35 languages. His most famous works include Islam: The Straight Path, The Islamic Threat: Myth or Reality?, What Everyone Needs to Know About Islam, The Future of Islam, and Islamophobia: The Challenge of Pluralism in the 21st Century. He also served as editor-in-chief of major reference books — The Oxford Dictionary of Islam, The Oxford History of Islam, and The Oxford Encyclopedia of the Islamic World — that are still used as standard texts in the field.

In 2007, Esposito co-authored Who Speaks for Islam? What a Billion Muslims Really Think with Dalia Mogahed. The book used data from more than 50,000 interviews across more than 35 Muslim-majority countries. At the time, especially after the September 11 attacks, many policy discussions about Muslims were based on assumptions rather than evidence. This book tried to change that by grounding its arguments in large-scale survey data instead of anecdotes or security-focused thinking.

Esposito's standing in the field was recognized in several ways. He served as president of both the Middle East Studies Association of North America and the American Academy of Religion — the two leading U.S. academic organizations in their respective areas. He received the Martin E. Marty Award for the Public Understanding of Religion and Pakistan's Quaid-e-Azam Award for Outstanding Contributions to Islamic Studies.

Esposito was a practicing Catholic his entire life. This made his position in the field unusual: he was a non-Muslim scholar whose work was embraced by Muslim-majority countries and Muslim communities in the West. His Catholic faith was central to his academic mission. His focus on Muslim-Christian understanding grew directly from a commitment to building bridges between faiths, and that commitment shaped both his research and the institutions he created.

The reach of Esposito's influence showed in the responses to his death. The Council on American-Islamic Relations (CAIR), a major Muslim civil rights organization in the U.S., issued a press release on July 15, 2026, offering condolences (CAIR). Malaysian Prime Minister Anwar Ibrahim posted a Facebook tribute saying their friendship went back more than 50 years to the early 1970s and called Esposito "a true friend of the Islamic world" (Al Jazeera). A sitting head of government publicly mourning an American academic is rare, and it reflects the credibility Esposito built over a career that connected the university lecture hall to the world of policy and diplomacy.

The broader context here is what Esposito leaves behind. When he began his career in the early 1970s, the academic study of Islam in the United States was far less developed than it is today. The research centers, reference books, and projects he built did not just ride the wave of growth in the field — they helped create it. The Prince Alwaleed Center and the Bridge Initiative are still active, and the reference books he edited still shape what gets taught in courses. Whether Georgetown's next generation of leaders in Islamic studies will maintain the same balance of rigorous scholarship and public engagement with Islamophobia is an open question — especially as U.S. universities face growing political pressure over Middle East-related research and teaching.