Chauncey (Chon) Day is an American cartoonist whose cartoons have appeared in The New Yorker and elsewhere.
He also worked on the comic strip Brother Sebastian. He received the National Cartoonist Society Gag Cartoon Award for 1956, 1962, and 1970, and their Special Features Award for Brother Sebastian in 1969. He died in 2000, according to an announcement in the May 2000 Saturday Evening Post, where he had been their "longest running cartoonist"
