Kate Norgate was a British historian. She was one of the first women to achieve academic success in this sphere, and is best known for her history of England under the Angevin kings and for coining the name Angevin Empire to describe their domains. She was self-educated in the Victorian era when higher education was generally denied to women. Her obituary in The Times described her as "the most learned woman historian of the pre-academic period."

Kate Sanborn was an American author, teacher and lecturer. Also a reviewer, compiler, essayist, and farmer, Sanborn was famous for her cooking and housekeeping.

Kate Tannatt Woods (1838–1910) was an American author, editor, journalist, and clubwoman. She published a number of children's books and novels, and her poems, short stories, and articles were published widely in newspapers and magazines. She was the founder and first president of the Thought and Work Club of Salem, Massachusetts.

Catherine Pickens Upson Clark was an American writer. She wrote articles for Godey's Lady's Book, Atlantic Monthly, Christian Herald, and Harper's Magazine. She was an editor of the Springfield Republican, Good Cheer Magazine, and later the New York Evening Post. She published several books, short stories, and one novel.

Kate Wilhelm was an American author. She wrote novels and stories in the science fiction, mystery, and suspense genres, including the Hugo Award–winning Where Late the Sweet Birds Sang. Wilhelm established the Clarion Workshop along with her husband Damon Knight and writer Robin Scott Wilson.

Katharine Lee Bates was an American author and poet, chiefly remembered for her anthem "America the Beautiful", but also for her many books and articles on social reform, on which she was a noted speaker.

Katharine Newlin Burt was an American novelist and film scenarist. She was a prolific author of Westerns and other novels, with a publishing career that spanned more than 60 years. At least seven of Burt's published works were adapted to film, and she authored the original screen stories for two more films.

Katharine Pearson Woods was an American novelist, labor activist, and advocate of Christian socialism.

Katharine Susannah Prichard was an Australian author and co-founding member of the Communist Party of Australia.

Katharine Tynan was an Irish writer, known mainly for her novels and poetry. After her marriage in 1893 to the Trinity College scholar, writer and barrister Henry Albert Hinkson (1865–1919) she usually wrote under the name Katharine Tynan Hinkson, or variations thereof. Tynan's younger sister Nora O'Mahony was also a poet and one of her three children, Pamela Hinkson (1900–1982), was also known as a writer. The Katharine Tynan Road in Belgard, Tallaght is named after her.