What are the main religions in Indiana Jones?

In the Indiana Jones series, the primary religions referenced are Christianity, particularly Catholicism, and elements of ancient religions, such as those associated with Hinduism and various mythologies. Artifacts like the Ark of the Covenant and the Holy Grail draw heavily on Christian themes, while the Temple of Doom incorporates aspects of Hindu beliefs and practices. The films often explore the intersection of faith, archaeology, and adventure, highlighting both religious devotion and the quest for historical truth.