Haim Arlosoroff (February 23, 1899 – June 16, 1933) (Hebrew: חיים ארלוזורוב) (also Arlozorov) was a Zionist leader of the Yishuv during the British Mandate for Palestine, prior to the establishment of Israel, and head of the Political Department of the Jewish Agency. In 1933, Arlosoroff was assassinated while walking on the beach in Tel Aviv.
Haim Arlosoroff was born in Romny, Ukraine on February 23, 1899. In Ukraine, he was known as Vitaly, the Russian equivalent of Haim. When living in Germany, he was known as Viktor. Arlosoroff's paternal grandfather was Rabbi Eliezer Arlosoroff of Romny, an author of religious commentaries on the Talmud. At the age of six, Arlosoroff encountered anti-Semitism for the first time. In 1905, the Arlosoroff family home in Romny was attacked during a violent pogrom. The family fled across the German border to East Prussia. Seven years later the family settled in Königsberg, Germany. Arlosoroff thus became fluent in German, in addition to studying Hebrew with a tutor. When World War I began in 1914, the family did not have German citizenship and were threatened with deportation. The family eventually obtained permission to move to Berlin. When his father, Saul, returned to Ukraine on business, he was barred from returning and died there of cholera. Arlosoroff studied economics at the University of Berlin and obtained a doctorate in that subject. During his studies, he wrote articles on Zionist affairs. In Germany, he became a key leader of Ha-Po'el ha-Tza'ir, ("The Young Worker Party"), a political party which attracted many of the intellectuals of the time. As a result of his party affiliation, Arlosoroff was appointed editor of "Die Arbeit", a journal in which his writings were first published.