thumb|Fred Holland Day, 1911.<br>Part of the [[Louise Imogen Guiney collection]]

thumb|Youth Sitting on a Stone, by F. Holland Day (1907)

thumb|Portrait of [[Edward Carpenter, the early gay rights activist, by F. Holland Day]]

Fred Holland Day (July 23, 1864 – November 23, 1933) was an American photographer and publisher. He was prominent in literary and photography circles in the late nineteenth century and was a leading Pictorialist. He was an early and vocal advocate for accepting photography as a fine art.

Day's life and works were controversial because he took an unconventional approach to religious subjects and often photographed male nudes. His emphasis on the classical ideal sometimes bordered on homoeroticism.

Day spent much time among poor immigrant children in Boston, tutoring them in reading and mentoring them. One in particular, the 13-year-old Lebanese immigrant Kahlil Gibran, went on to fame as the author of The Prophet.