C. Yarnall Abbott (September 23, 1870 – June 24, 1938) was an American photographer and painter.
Abbott was born in 1870, the son of William H. Abbott, a prominent attorney, and Sarah Yarnall. He grew up in Philadelphia, Pennsylvania. He originally went to college to study law. He graduated from the University of Pennsylvania Law School in 1892. He was a lawyer for ten years before becoming an artist.