Reuben Garret Lucius Golberg (July 4, 1883 - December 7, 1970) was an American cartoonist who received a 1948 Pulitzer Prize for his political cartooning. He is best known for his series of popular cartoons depicting Rube Goldberg machines, complex devices that perform simple tasks in indirect, convoluted ways. The Reuben Award of the National Cartoonists Society is named in his honor. In addition, there are several contests around the world known as Rube Goldberg contests which challenge high school students to make a complex machine to perform a simple task.