August Hjalmar Edgren was a Swedish-American linguist, professor, and author.

August Kitzberg (29 December [O.S. 17 December] 1855 in Laatre Parish, Governorate of Livonia, Russian Empire – 10 October 1927 in Tartu) was an Estonian writer.

August Kleinzahler (born December 10, 1949) is an American poet.

August Kluckhohn was a German historian, born at Bavenhausen in Lippe.

Karl August Koberstein was a German literary historian.

August Kopisch (26 May 1799 – 6 February 1853) was a German poet and painter.

August "Gustl" Friedrich Kubizek was an Austrian musical conductor and writer best known for being a close friend of Adolf Hitler, when both were in their late teens. He later wrote about their friendship in his book The Young Hitler I Knew (1955).

August Heinrich Julius Lafontaine was a German novelist.

August Leopold Crelle was a German mathematician. He was born in Eichwerder near Wriezen, Brandenburg, and died in Berlin. He is the founder of Journal für die reine und angewandte Mathematik. He befriended Niels Henrik Abel and published seven of Abel's papers in the first volume of his journal.

August Lewald (14 October 1792 in Königsberg – 10 March 1871 in Baden-Baden) was a German author.