Fernán Caballero was the pseudonym of Spanish novelist Cecilia Francisca Josefa Böhl de Faber y Ruiz de Larrea. She was daughter of German writer Johann Nikolaus Böhl von Faber and Spanish writer Frasquita Larrea. Her pen name was adopted from that of a village in the province of Ciudad Real.

Fernando António Nogueira Pessoa was a Portuguese poet, writer, literary critic, translator, publisher, and philosopher, described as one of the most significant literary figures of the 20th century and one of the greatest poets in the Portuguese language. He also wrote in and translated from English and French.

Finley Peter Dunne was an American humorist, journalist and writer from Chicago. In 1898 Dunne published Mr. Dooley in Peace and in War, a collection of his nationally syndicated Mr. Dooley sketches. Speaking with the thick verbiage and accent of an Irish immigrant from County Roscommon, the fictional Mr. Dooley expounded upon political and social issues of the day from his South Side Chicago Irish pub. Dunne's sly humor and political acumen won the support of President Theodore Roosevelt, a frequent target of Mr. Dooley's barbs. Dunne's sketches became so popular and such a litmus test of public opinion that they were read each week at White House cabinet meetings.

Fitz Hugh Ludlow, sometimes seen as Fitzhugh Ludlow, was an American author, journalist, and explorer; best known for his autobiographical book The Hasheesh Eater (1857).

Fitz James O'Brien was an Irish-American Civil War soldier, writer, and poet often cited as an early practitioner of science fiction.

Murray Fletcher Pratt was an American writer of history, science fiction, and fantasy. He is best known for his works on naval history and the American Civil War and for fiction written with L. Sprague de Camp.

Florence Caddy was an English non-fiction writer from Middlesex. She wrote the first book on household management to become well known.

Florence Converse was an American author. Throughout her career, she wrote a variety of pieces spanning many genres, including historical novels, mysteries, religious plays, and poetry. Converse had a Boston marriage with Vida Dutton Scudder.

Florence Hartley was a Victorian-era writer whose work was meant for women of the era, covering topics of etiquette and needlework. She was also an advocate for women's health.

Florence Holbrook was an American writer, educator, suffragist, and peace activist. She taught in the Chicago schools for over fifty years, and was an American delegate to the International Congress of Women in 1915, at the Hague, and in 1919, in Zürich. She was also aboard the Peace Ship with Rosika Schwimmer, and part of John Dewey's commission to study Soviet education in 1929.