Jacob de Haas (13 August 1872 – 21 March 1937) was a British-born Jewish journalist and an early leader of the Zionist movement in the United States and England.

He was the secretary of the First Zionist Congress and introduced Theodor Herzl to the UK via the Jewish World newspaper.

[citation needed] In 1896, he became the first member of Hovevei Zion to encourage the movement to adopt the political Zionist program of Theodor Herzl.

Theodor Herzl had suggested to Richard Gottheil that he hire de Haas as the new secretary of the Federation of American Zionists (FAZ) to replace Stephen Samuel Wise.

[3] De Haas died at Mount Sinai Hospital in New York City on 21 March 1937 after a lengthy illness.