Immanuel Jakobovits, Baron Jakobovits was the Chief Rabbi of the United Hebrew Congregations of the Commonwealth from 1967 to 1991. Prior to this, he had served as Chief Rabbi of Ireland and as rabbi of the Fifth Avenue Synagogue in New York City. In addition to his official duties he was regarded as an authority in medical ethics from a Jewish standpoint. He was knighted in 1981 and became the first Chief Rabbi to enter the House of Lords in 1988 as Baron Jakobovits.

The Fifth Avenue Synagogue is an Orthodox Jewish synagogue located at 5 East 62nd Street between Fifth and Madison Avenues in the Upper East Side neighborhood of Manhattan, New York City, New York, United States.