Alfredo Varela was an Argentinian writer. A communist, he won the Lenin Peace Prize 1970-1971 and was awarded with the Order of Friendship of Peoples by the Soviet Union. His most famous novel was The Dark River, adapted into a film by his friend Hugo del Carril in 1952 as Las aguas bajan turbias.

Alfredo Zitarrosa was a Uruguayan singer-songwriter, poet and journalist. He specialized in Uruguayan and Argentinean folk genres such as zamba and milonga, and he became a chief figure in the nueva canción movement in his country. A staunch supporter of Communist ideals, he lived in exile between 1976 and 1984. He is widely regarded as one of the most influential singer-songwriters of Latin America.

Algernon Henry Blackwood, CBE was an English broadcasting narrator, journalist, novelist and short story writer, and among the most prolific ghost story writers in the history of the genre. The literary critic S. T. Joshi stated, "His work is more consistently meritorious than any weird writer's except Dunsany's" and that his short story collection Incredible Adventures (1914) "may be the premier weird collection of this or any other century".

Algernon Charles Swinburne was an English poet, playwright, novelist, and critic. He wrote several novels and collections of poetry such as Poems and Ballads, and contributed to the famous Eleventh Edition of the Encyclopædia Britannica.

Algernon Graves was a British art historian and art dealer, who specialised in the documentation of the exhibition and sale of works of art. He created reference sources that began the modern discipline of provenance research.

Algernon Bertram Mitford, 1st Baron Redesdale, was a British diplomat, traveller, collector and writer, who wrote as A.B. Mitford.

Sir Algernon Edward West was an English civil servant. He acted as Principal Private Secretary to Prime Minister William Gladstone.

Algimantas Anicetas Bučys is a poet, prose writer, translator, literary theorist, historian and critic of Lithuanian literature, doctor of Humanities.

Algirdas Jonas "Algis" Budrys was a Lithuanian-American science fiction author, editor, and critic. He was also known under the pen names Frank Mason, Alger Rome, John A. Sentry, William Scarff, and Paul Janvier. He is known for the influential 1960 novel Rogue Moon.

Algot Untola (28 November 1868 – 21 May 1918) was a Finnish writer and journalist.