The Old Yishuv (Hebrew: היישוב הישן, haYishuv haYashan) were the Jewish communities of the region of Palestine during the Ottoman period, up to the onset of Zionist aliyah waves, and the consolidation of the new Yishuv by the end of World War I. Unlike the new Yishuv, characterized by secular and Zionist ideologies promoting labor and self-sufficiency, the Old Yishuv primarily consisted of religious Jews who relied on external donations (halukka) for support.
The Old Yishuv evolved following a significant decline in Jewish communities across the region during late antiquity and the early Middle Ages, and was composed of three clusters. Firstly, Ladino-speaking Sephardic Jewish communities settled in the region during the late Mamluk and early Ottoman periods, alongside Arabic-speaking Musta'arabi communities, who had already been living there since before the coming of Islam and had been culturally and linguistically Arabized. Secondly, Ashkenazi Jews emigrated from Europe in the 18th and early 19th centuries, forming another group. A third wave of Yishuv members arrived in the late 19th century, hailing from Europe, North Africa, Yemen, Persia, and the Caucasus. These migrations gave rise to two distinct communities within the Old Yishuv—the Sephardim (including Musta'arabim) and the Askhenazim.