Where did jack in the box get its name?

Jack in the Box got its name from the classic children's toy, the jack-in-the-box, which is a box that pops open to reveal a clown or jester. The restaurant's founder, Robert O. Peterson, chose the name in 1951 to reflect a playful and whimsical theme. The brand's mascot, a character named "Jack," further emphasizes this playful identity. The name has since become synonymous with the fast-food chain known for its diverse menu and drive-thru service.