Charles Henry Buckius Demuth (November 8, 1883 – October 23, 1935) was an American painter who specialized in watercolors and turned to oils late in his career, developing a style of painting known as Precisionism.

"Search the history of American art," wrote Ken Johnson in The New York Times, "and you will discover few watercolors more beautiful than those of Charles Demuth. Combining exacting botanical observation and loosely Cubist abstraction, his watercolors of flowers, fruit and vegetables have a magical liveliness and an almost shocking sensuousness."