Felix Octavius Carr Darley (1822-1888) was an American illustrator known for his illustrations in works by well-known nineteenth century authors. Darley was a self-taught and prolific artist who started out as a staff artist for a Philadelphia publishing company. After moving to New York, his work began to appear in magazines such as Harper's Weekly and in books by various publishers.

He worked with a number of nineteenth century authors including Washington Irving ("The Legend of Sleepy Hollow" and "Rip Van Winkle"), Edgar Allan Poe, James Fenimore Cooper, Charles Dickens, Nathaniel Hawthorne, Henry Wadsworth Longfellow, Clement Clarke Moore, and Harriet Beecher Stowe. Additionally, he designed bank notes and bonds for the U.S. government.

Darley died in 1888 at his home in Claymont, Delware.