Karl Wilhelm Piderit was a German classical philologist and educator.

Karl Wilhelm Ramler was a German poet, Berlin Cadet School master.

Count Karl Wilhelm von Toll was a Baltic German aristocrat and Russian subject who served in the Imperial Russian Army in the campaigns against the Napoleonic Army.

Karl Woermann was a German art historian and museum director.

Karl Wolfskehl was a German Jewish author and translator. He wrote poetry, prose and drama in German, and translated from French, English, Italian, Hebrew, Latin and Old/Middle High German into German.

Karl Ludwig August Friedrich Maximilian Alfred, Freiherr von Prel, or, in French, Carl Ludwig August Friedrich Maximilian Alfred, Baron du Prel, was a German philosopher and writer on mysticism and the occult. In the literature it has become customary to refer to him under various abbreviated French forms of his name, usually "Carl Du Prel," "Baron Carl Du Prel," or simply "Baron Du Prel."

Karla Alexandra Höcker was a German writer and musician.

Karla Kuskin was a prolific American author, poet, illustrator, and reviewer of children's literature. Kuskin was known for her poetic, alliterative style.

Karla Suárez (born October 28, 1969) is a Cuban writer.

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.