Hillel Cohen-Bar (born in Jerusalem, 1961) is an Israeli scholar who studies and writes about Jewish-Arab relations in Palestine/Israel. He is a Research Fellow at the Harry S. Truman Institute for the Advancement of Peace at the Hebrew University of Jerusalem and a senior lecturer at that university.
Cohen is especially familiar with east Jerusalem, the topic of his book, Kikar Hashuk Reka (The Marketplace is Empty or: The Rise and Fall of Arab Jeruslaem), because of the years he spent as a correspondent for east Jerusalem affairs for the Israeli weekly Kol Ha'ir. He published extensively on the Palestinian internal refugees and on the 1948 war. Two of his books deal with Palestinian collaborators and the Israeli security agencies, using methodology that can be described as history-from-below. The Jerusalem Post calls his books "an accessible mixture of academic research and vivid journalistic reporting. Cohen manages to show empathy when relating human issues, but maintains a professional distance regarding events."