Cap'n Crunch is a corn and oat breakfast cereal manufactured since 1963 by Quaker Oats Company, a subsidiary of PepsiCo since 2001. Since the original product introduction, marketed simply as Cap'n Crunch, Quaker Oats has since introduced numerous flavors and seasonal variations, some for a limited time—and currently offers a Cap'n Crunch product line.

The Quaker Oats Company, known as Quaker, is an American food conglomerate based in Chicago, Illinois. As Quaker Mill Company, the company was founded in 1877 in Ravenna, Ohio. In 1881, Henry Crowell bought the company and launched a national advertising campaign for Quaker Oats.