Karl Otfried Müller was a German professor, scholar of classical Greek studies and philodorian.

Karl Philipp Moritz was a German author, editor and essayist of the Sturm und Drang, late Enlightenment, and classicist periods, influencing early German Romanticism as well. He led a life as a hatter's apprentice, teacher, journalist, literary critic, professor of art and linguistics, and member of both of Berlin's academies.

Johann Karl Friedrich Rosenkranz was a German philosopher and pedagogue.

Karle Wilson Baker was an American poet and author, born in Little Rock, Ark. to Kate Florence Montgomery Wilson and William Thomas Murphey Wilson. Educated at the University of Chicago, she studied under poet William Vaughn Moody and novelist Robert Herrick, and later went on to write her own poems and novels.

Kate Chopin was an American author of short stories and novels based in Louisiana. She is considered by scholars to have been a forerunner of American 20th-century feminist authors of Southern or Catholic background, such as Zelda Fitzgerald, and she is one of the more frequently read and recognized writers of Louisiana Creole heritage. She is best known today for her 1899 novel The Awakening.

Kate Dickinson Sweetser (1870–1939) was an American author known in her time for writing juvenile fiction and compilations. She was born in New York City to Charles H. and Mary N. Sweetser. Her great-grandfather, Samuel Dickinson, was one of the founders of Amherst College in Massachusetts; she was also the cousin of poet Emily Dickinson.

Kate Douglas Wiggin was an American educator, author and composer. She wrote children's stories, most notably the classic children's novel Rebecca of Sunnybrook Farm, and composed collections of children's songs. She started the first free kindergarten in San Francisco in 1878. With her sister during the 1880s, she also established a training school for kindergarten teachers. Kate Wiggin devoted her adult life to the welfare of children in an era when children were commonly thought of as cheap labor.

Kate Gannett Wells was an American writer and social reformer, and a prominent member of the anti-suffragist movement in the United States. Wells served on the Massachusetts Board of Education for twenty-four years beginning in 1888 and was a vice president of the New England Women's Club. She also published several books, including the novel In the Clearings (1884) and the nonfiction work Campobello: An Historical Sketch.

Catherine Greenaway was an English Victorian artist and writer, known for her children's book illustrations. She received her education in graphic design and art between 1858 and 1871 from the Finsbury School of Art, the South Kensington School of Art, the Heatherley School of Art and the Slade School of Fine Art. She began her career designing for the burgeoning holiday card market, producing Christmas and Valentine's cards. In 1879 wood-block engraver and printer, Edmund Evans, printed Under the Window, an instant best-seller, which established her reputation. Her collaboration with Evans continued throughout the 1880s and 1890s.

Kate Langley Bosher was an American novelist from Virginia, best known for her novels Mary Cary (1910) and Miss Gibbie Gault (1911). She was also a suffragist and founding member and officer of the Equal Suffrage League of Virginia.