Elihu Palmer (1764 – April 7, 1806) was an author and advocate of deism in the early days of the United States.

He resided for a time in Augusta, Georgia, where he collected materials for Jedediah Morse's Geography, and subsequently lived in Philadelphia and New York City.

In 1793 he became totally blind from an attack of yellow fever but continued as a public speaker.

Palmer kept writing until the end of his life and published a number of different written works including "A Fourth of July Oration" (1797), and was also the author of The Principles of Nature, or A Development of the Moral Causes of Happiness and Misery among the Human Species.

He also founded two newspapers, The Temple of Reason in 1800 and Prospect, or View of the Moral World in 1803.