Cornelia Barns (1888–1941) was an artist and political cartoonist. She studied art at the Pennsylvania Academy of Fine Arts, and subsequently moved to New York City.
It is likely that she studied with Robert Henri, and was associated with his circle of artists who would later come to be known as the Ashcan School of American Art. For three years, she served on the editorial board of the New York-based socialist magazine the Masses, publishing political cartoons mostly on the topic of women's suffrage. She also published cartoons in the suffrage magazines Suffragist and Woman Voter, and for Margaret Sanger's publication the Birth Control Review.
She moved to Oakland, California in the mid 1910s with her husband, and lived there until her death in 1941. Few of her unpublished artworks survive.