Reuven Hammer (1933 – 12 August 2019) was an American-Israeli Conservative rabbi, scholar of Jewish liturgy, author and lecturer. He was born in Syracuse, New York. He was a founder of the "Masorti" (Conservative) movement in Israel. He was president of the International Rabbinical Assembly. For many years, he was head of the Masorti Beth Din in Israel. He was a regular columnist for "The Jerusalem Post" "Tradition Today" column. 