Isaac Leeser (December 12, 1806 – February 1, 1868) was an American, Ashkenazi Jewish lay minister of religion, author, translator, editor, and publisher; pioneer of the Jewish pulpit in the United States, and founder of the Jewish press of America. He produced the first Jewish translation of the Bible into English, as well as editions of the liturgy. He is considered one of the most important American Jewish personalities of nineteenth century America.