Felix Octavius Carr Darley (June 23, 1822 – March 27, 1888), often credited as F. O. C. Darley, was an American illustrator, known for his illustrations in works by well-known 19th-century authors, including James Fenimore Cooper, Charles Dickens, Mary Mapes Dodge, Nathaniel Hawthorne, Washington Irving, George Lippard, Henry Wadsworth Longfellow, Donald Grant Mitchell, Clement Clarke Moore, Francis Parkman, Harriet Beecher Stowe and Nathaniel Parker Willis.

The swing and vigor of his style, his facility, and versatility and the high average merit of his numerous works, make him one of the most noteworthy of American illustrators.

Darley signed a contract with Edgar Allan Poe on January 31, 1843, to create original illustrations for his upcoming literary journal The Stylus.

[4] The Stylus was never actually produced but Darley provided illustrations for the final installments of the first serial publication of Poe's award-winning tale "The Gold-Bug" later that year.

[5] In 1848, Darley provided the drawings for the first fully illustrated edition of Irving's "Rip Van Winkle",[6] which was printed and distributed by the American Art-Union.