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Antanas Augustinas Vaičiulaitis (June 23, 1906 – July 22, 1992) was a Lithuanian fiction writer of the 20th century, and also known for his literary criticism and translations. His most prominent work is the novel Valentina.

Antanas Vaičiulaitis was born on June 23, 1906, in Didieji Šelviai, near Vilkaviškis, in the Suvalkija region, then part of Congress Poland. He attended a primary school in Vilkaviškis, and from 1919 to 1927, he attended Žiburys High School, also in Vilkaviškis. His poetry was first published in 1925 in the journal Krivulė. In 1927, he enrolled at the University of Lithuania in Kaunas,^[1] where he studied Lithuanian and French languages and literature. After finishing his studies at the university, for a short while he taught at the Kaunas Jesuit school. From 1935 to 1938, he enrolled in advanced studies of French literature at the University of Grenoble and at the Sorbonne.^[1] He won the Sakalas Prize for novels in 1936.^[2] Returning to Kaunas, from 1938 to 1940, he worked at the news service ELTA and taught new Lithuanian literature in the Theology and Philosophy Department at Vytautas Magnus University. He traveled frequently in Europe.

In 1940, Vaičiulaitis was appointed to diplomatic service at the Lithuanian Embassy in Rome, and he then emigrated to the United States. From 1941 to 1945, he taught at the Marianapolis Preparatory School.^[3] In 1943, he joined the U.S. Army Air Force,^[3] and for health reasons received an honorable discharge. From 1945 to 1947 he edited the journal Amerika, and from 1947 to 1951 he taught French at the University of Scranton.^[1][2] In 1951, Vaičiulaitis began work for the United States Information Agency (USIA), for the Lithuanian service of the Voice of America, from which he retired in 1976. He died on July 22, 1992, in Washington, D.C.

• LMS IC: Classic Lithuanian Literature Anthology
• Antologija - Classic Lithuanian Literature Anthology
• Virginija Paplauskienė, 2006, Antanas Vaičiulaitis: Archyvai, Kaunas: Maironio lietuvių literatūros muziejus.

• Šilbajoris, Rimvydas (2002). A Short History of Lithuanian Literature. Baltos Lankos. pp. 86–90. ISBN 9789955429760.
• Kubilius, Vytautas (1997). Lithuanian literature. Vaga. pp. 234–36. ISBN 9785415005031.
• Serafin, Steven (2000-03-03). Dictionary of Literary Biography: Twentieth-century Eastern European writers (vol. 220). Gale Group. pp. 297–302. ISBN 9780787631291.
• Šilbajoris, Rimvydas (2002). A Short History of Lithuanian Literature. Baltos Lankos. p. 90. ISBN 9789955429760.
• Antanaitis, Algirdas Titus (1997). Lietuvių egzodo literatūra: 1945-1990 (in Lithuanian). Vaga. p. 225. ISBN 9785415004454.