George Washington Bonner (1878 – March 12, 1935), popularly known as Kid Canfield, was an American gambler and confidence trickster who later reformed and made a series of lectures and two films on the prevalence of cheating in gambling. Born in a small village near Columbus, Ohio, Canfield learned to gamble in his family's hotel. After a period running fixed three-card Monte games at circuses, he traveled the United States to play high-stakes card games. Canfield claimed to have played with gangsters such as Arnold Rothstein, Legs Diamond, and Al Capone and to have won $350,000 from Rothstein in a single session.
By 1910 Canfield had ended his gambling career and was touring the vaudeville circuit with a show recounting his story and revealing his methods of cheating. He published chapbooks on the subject and, in 1912, appeared in a two-reel silent film depicting his life and cheating methods. He starred in a second film in 1922, five reels long and on a similar subject matter set around a Western theme. Canfield continued his vaudeville act until 1935 when he died while making a promotional radio broadcast on WHIS in Bluefield, West Virginia.