This article explores depictions of religion and religious topics in children's biographies included on the National Science Teacher's Association's Outstanding Science Trade Books for Students K-12 lists from 2011 through 2017. While disagreements and controversies about the role of religion in U.S. public schools are not new, these debates have experienced a resurgence in recent years due, in part, to the increased emphasis placed upon science as a content area. As a vital component of transformative, democratic, justice-oriented education, educators have a responsibility to validate and honor their students' religious liberties, and understand and respect a variety of different belief systems. And yet, teachers often report feeling unprepared and even afraid to discuss religions in public school settings. Grounded in the belief that all knowledge, including scientific knowledge, is socially constructed, this article explores the ways in which these topics are taken up in children's books that have been identified as exemplary and recommended for classroom use.