Harry Rimmer was an influential American evangelist and creationist known for his vigorous defense of biblical creationism in the face of evolutionary theory. He founded the Science Research Bureau in Los Angeles, an organization dedicated to validating the Bible through scientific inquiry in fields such as biology, paleontology, and anthropology. Rimmer's work positioned him as a prominent figure among fundamentalist leaders during the early 20th century, and he served as a field secretary for the World Christian Fundamentals Association in the 1920s, further solidifying his role in the creationist movement. Rimmer authored numerous publications that argued against evolutionary theory and promoted a literal interpretation of the Bible. His writings contributed to the ongoing debate between science and religion, making him a notable figure in the history of American fundamentalism. Through his efforts, Rimmer sought to provide a scientific foundation for faith, influencing both religious thought and the discourse surrounding creationism in America. His legacy endures in the continued discussions on the intersection of science and religion, particularly within evangelical circles.