 This entry will focus on the relationship between religious and scientific ideas as rather abstract philosophical positions, rather than as practices. However, this relationship has a large practical impact on the lives of religious people and scientists (including those who are both scientists and religious believers). A rich sociological literature indicates the complexity of these interactions, among others, how religious scientists conceive of this relationship (for recent reviews, see Ecklund 2010, 2021; Ecklund &amp; Scheitle 2007; Gross &amp; Simmons 2009).