This reference documents the lives and careers of the most influential leaders of Reform Judaism in America. The editors have assembled biographical profiles of approximately 170 people. The work spans the period from the beginning of the Reform movement in 1824 through the 1976 Centenary Perspective. The individuals profiled were selected because of their impact on Reform Judaism at a national level. Included are the principal architects of reform, national organisational leaders, distinguished rabbis and academicians, outstanding cantors, volunteer lay activists, and women. The work begins with an essay on the history of Reform Judaism in America. A biographical dictionary follows. Each entry in the dictionary assesses the career and contributions of a particular leader and closes with a short bibliography of works by and about that individual. The dictionary by a set of essays that overview the history of associations related to Reform Judaism. A section of appendices lists the principal figures affiliated to these organisations. An extensive bibliography of primary and secondary sources concludes the work.